Tukukkk

I think this topic is totally overdiscussed/overcomplicated. Using an IDE is THE way to go to completely avoid any syntax errors. I would even say that working without an IDE is kind of unprofessional. Why? Because modern IDEs check your syntax after every character you type. When you code and your entire line turns red, and a big warning notice shows you the exact type and the exact position of the syntax error, then there's absolutely no need to search for another solution.

Using a syntax-checking IDE means:

You'll (effectively) never run into syntax errors again, simply because you see them right as you type. Seriously.

Excellent IDEs with syntax check (all of them are available for Linux, Windows and Mac):

1. 
   NetBeans [free]


2. 
   PHPStorm [$199 USD]


3. 
   Eclipse with PHP Plugin [free]


4. 
   Sublime [$80 USD] (mainly a text editor, but expandable with plugins, like PHP Syntax Parser)

Unexpected [

These days, the unexpected [ array bracket is commonly seen on outdated PHP versions. The short array syntax is available since PHP >= 5.4. Older installations only support array().

$php53 = array(1, 2, 3);

$php54 = [1, 2, 3];

         ⇑

Array function result dereferencing is likewise not available for older PHP versions:

$result = get_whatever()["key"];

                      ⇑

Reference - What does this error mean in PHP? - "Syntax error, unexpected [" shows the most common and practical workarounds.

Though, you're always better off just upgrading your PHP installation. For shared webhosting plans, first research if e.g. SetHandler php56-fcgi can be used to enable a newer runtime.

See also:

• PHP syntax for dereferencing function result → possible as of PHP 5.4


• PHP syntax error, unexpected '['


• Shorthand for arrays: is there a literal syntax like {} or ?


• PHP 5.3.10 vs PHP 5.5.3 syntax error unexpected '['


• PHP Difference between array() and


• PHP Array Syntax Parse Error Left Square Bracket "["

BTW, there are also preprocessors and PHP 5.4 syntax down-converters if you're really clingy with older + slower PHP versions.

Other causes for Unexpected [ syntax errors

If it's not the PHP version mismatch, then it's oftentimes a plain typo or newcomer syntax mistake:

• 
  

  You can't use array property declarations/expressions in classes, not even in PHP 7.

  
  
  

  protected $var["x"] = "Nope";
  
                ⇑
  
  

  
  


• 
  

  Confusing [ with opening curly braces { or parentheses ( is a common oversight.

  
  
  

  foreach [$a as $b)
  
          ⇑
  
  

  
  
  

  Or even:

  
  
  

  function foobar[$a, $b, $c] {
  
                 ⇑
  
  

  
  


• 
  

  Or trying to dereference constants (before PHP 5.6) as arrays:

  
  
  

  $var = const[123];
  
         ⇑
  
  

  
  
  

  At least PHP interprets that const as a constant name.

  
  
  

  If you meant to access an array variable (which is the typical cause here), then add the leading $ sigil - so it becomes a $varname.

  
  


• 
  

  You are trying to use the global keyword on a member of an associative array. This is not valid syntax:

  
  
  

  global $var['key'];
  
  

  
  

Unexpected ] closing square bracket

This is somewhat rarer, but there are also syntax accidents with the terminating array ] bracket.

• 
  

  Again mismatches with ) parentheses or } curly braces are common:

  
  
  

  function foobar($a, $b, $c] {
  
                            ⇑
  
  

  
  


• 
  

  Or trying to end an array where there isn't one:

  
  
  

  $var = 2];
  
  

  
  
  

  Which often occurs in multi-line and nested array declarations.

  
  
  

  $array = [1,[2,3],4,[5,6[7,[8],[9,10]],11],12]],15];
  
                                               ⇑
  
  

  
  
  

  If so, use your IDE for bracket matching to find any premature ] array closure. At the very least use more spacing and newlines to narrow it down.

  
  

Unexpected T_VARIABLE

An "unexpected T_VARIABLE" means that there's a literal $variable name, which doesn't fit into the current expression/statement structure.

1. 
   

   Missing semicolon

   
   
   

   It most commonly indicates a missing semicolon in the previous line. Variable assignments following a statement are a good indicator where to look:

   
   
   

          ⇓
   
   func1()
   
   $var = 1 + 2;     # parse error in line +2
   
   

   
   


2. 
   

   String concatenation

   
   
   

   A frequent mishap are string concatenations with forgotten . operator:

   
   
   

                                  ⇓
   
   print "Here comes the value: "  $value;
   
   

   
   
   

   Btw, you should prefer string interpolation (basic variables in double quotes) whenever that helps readability. Which avoids these syntax issues.

   
   
   

   
   

   String interpolation is a scripting language core feature. No shame in utilizing it. Ignore any micro-optimization advise about variable . concatenation being faster. It's not.

   
   

   
   


3. 
   

   Missing expression operators

   
   
   

   Of course the same issue can arise in other expressions, for instance arithmetic operations:

   
   
   

              ⇓
   
   print 4 + 7 $var;
   
   

   
   
   

   PHP can't guess here if the variable should have been added, subtracted or compared etc.

   
   


4. 
   

   Lists

   
   
   

   Same for syntax lists, like in array populations, where the parser also indicates an expected comma , for example:

   
   
   

                                         ⇓
   
   $var = array("1" => $val, $val2, $val3 $val4);
   
   

   
   
   

   Or functions parameter lists:

   
   
   

                                   ⇓
   
   function myfunc($param1, $param2 $param3, $param4)
   
   

   
   
   

   Equivalently do you see this with list or global statements, or when lacking a ; semicolon in a for loop.

   
   


5. 
   

   Class declarations

   
   
   

   This parser error also occurs in class declarations. You can only assign static constants, not expressions. Thus the parser complains about variables as assigned data:

   
   
   

   class xyz {      ⇓
   
       var $value = $_GET["input"];
   
   

   
   
   

   Unmatched } closing curly braces can in particular lead here. If a method is terminated too early (use proper indentation!), then a stray variable is commonly misplaced into the class declaration body.

   
   


6. 
   

   Variables after identifiers

   
   
   

   You can also never have a variable follow an identifier directly:

   
   
   

                ⇓
   
   $this->myFunc$VAR();
   
   

   
   
   

   Btw, this is a common example where the intention was to use variable variables perhaps. In this case a variable property lookup with $this->{"myFunc$VAR"}(); for example.

   
   
   

   
   

   Take in mind that using variable variables should be the exception. Newcomers often try to use them too casually, even when arrays would be simpler and more appropriate.

   
   

   
   


7. 
   

   Missing parens after language constructs

   
   
   

   Hasty typing may lead to forgotten opening parenthesis
   for if and for and foreach statements:

   
   
   

          ⇓
   
   foreach $array as $key) {
   
   

   
   
   

   Solution: add the missing opening ( between statement and variable.

   
   


8. 
   

   Else does not expect conditions

   
   
   

        ⇓
   
   else ($var >= 0)
   
   

   
   
   

   Solution: Remove the conditions from else or use elseif.

   
   


9. 
   

   Need brackets for closure

   
   
   

        ⇓
   
   function() uses $var {}
   
   

   
   
   

   Solution: Add brackets around $var.

   
   


10. 
    

    Invisible whitespace

    
    
    

    As mentioned in the reference answer on "Invisible stray Unicode" (such as a non-breaking space), you might also see this error for unsuspecting code like:

    
    
    

    <?php
    
                              ⇐
    
    $var = new PDO(...);
    
    

    
    
    

    It's rather prevalent in the start of files and for copy-and-pasted code. Check with a hexeditor, if your code does not visually appear to contain a syntax issue.

    
    

See also

• Search: unexpected T_VARIABLE

Unexpected T_CONSTANT_ENCAPSED_STRING
Unexpected T_ENCAPSED_AND_WHITESPACE

The unwieldy names T_CONSTANT_ENCAPSED_STRING and T_ENCAPSED_AND_WHITESPACE refer to quoted "string" literals.

They're used in different contexts, but the syntax issue are quite similar. T_ENCAPSED… warnings occur in double quoted string context, while T_CONSTANT… strings are often astray in plain PHP expressions or statements.

1. 
   

   Incorrect variable interpolation

   
   
   

   And it comes up most frequently for incorrect PHP variable interpolation:

   
   
   

                             ⇓     ⇓
   
   echo "Here comes a $wrong['array'] access";
   
   

   
   
   

   Quoting arrays keys is a must in PHP context. But in double quoted strings (or HEREDOCs) this is a mistake. The parser complains about the contained single quoted 'string', because it usually expects a literal identifier / key there.

   
   
   

   More precisely it's valid to use PHP2-style simple syntax within double quotes for array references:

   
   
   

   echo "This is only $valid[here] ...";
   
   

   
   
   

   Nested arrays or deeper object references however require the complex curly string expression syntax:

   
   
   

   echo "Use {$array['as_usual']} with curly syntax.";
   
   

   
   
   

   If unsure, this is commonly safer to use. It's often even considered more readable. And better IDEs actually use distinct syntax colorization for that.

   
   


2. 
   

   Missing concatenation

   
   
   

   If a string follows an expression, but lacks a concatenation or other operator, then you'll see PHP complain about the string literal:

   
   
   

                          ⇓
   
   print "Hello " . WORLD  " !";
   
   

   
   
   

   While it's obvious to you and me, PHP just can't guess that the string was meant to be appended there.

   
   


3. 
   

   Confusing string quote enclosures

   
   
   

   The same syntax error occurs when confounding string delimiters. A string started by a single ' or double " quote also ends with the same.

   
   
   

                   ⇓
   
   print "<a href="' . $link . '">click here</a>";
   
         ⌞⎽⎽⎽⎽⎽⎽⎽⎽⌟⌞⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⌟⌞⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⌟
   
   

   
   
   

   That example started with double quotes. But double quotes were also destined for the HTML attributes. The intended concatenation operator within however became interpreted as part of a second string in single quotes.

   
   
   

   
   

   Tip: Set your editor/IDE to use slightly distinct colorization for single and double quoted strings. (It also helps with application logic to prefer e.g. double quoted strings for textual output, and single quoted strings only for constant-like values.)

   
   

   
   
   

   This is a good example where you shouldn't break out of double quotes in the first place. Instead just use proper " escapes for the HTML attributes´ quotes:

   
   
   

   print "<a href="{$link}">click here</a>";
   
   

   
   
   

   While this can also lead to syntax confusion, all better IDEs/editors again help by colorizing the escaped quotes differently.

   
   


4. 
   

   Missing opening quote

   
   
   

   Equivalently are forgotten opening "/' quotes a recipe for parser errors:

   
   
   

                  ⇓
   
    make_url(login', 'open');
   
   

   
   
   

   Here the ', ' would become a string literal after a bareword, when obviously login was meant to be a string parameter.

   
   


5. 
   

   Array lists

   
   
   

   If you miss a , comma in an array creation block, the parser will see two consecutive strings:

   
   
   

   array(               ⇓
   
        "key" => "value"
   
        "next" => "....",
   
   );
   
   

   
   
   

   Note that the last line may always contain an extra comma, but overlooking one in between is unforgivable. Which is hard to discover without syntax highlighting.

   
   


6. 
   

   Function parameter lists

   
   
   

   Same thing for function calls:

   
   
   

                            ⇓
   
   myfunc(123, "text", "and"  "more")
   
   

   
   


7. 
   

   Runaway strings

   
   
   

   A common variation are quite simply forgotten string terminators:

   
   
   

                                   ⇓
   
   mysql_evil("SELECT * FROM stuffs);
   
   print "'ok'";
   
         ⇑
   
   

   
   
   

   Here PHP complains about two string literals directly following each other. But the real cause is the unclosed previous string of course.

   
   

See also

• Interpolation (double quoted string) of Associative Arrays in PHP


• PHP - syntax error, unexpected T_CONSTANT_ENCAPSED_STRING


• Syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in PHP


• Unexpected T_CONSTANT_ENCAPSED_STRING error in SQL Query

Unexpected T_STRING

T_STRING is a bit of a misnomer. It does not refer to a quoted "string". It means a raw identifier was encountered. This can range from bare words to leftover CONSTANT or function names, forgotten unquoted strings, or any plain text.

1. 
   

   Misquoted strings

   
   
   

   This syntax error is most common for misquoted string values however. Any unescaped and stray " or ' quote will form an invalid expression:

   
   
   

                  ⇓                  ⇓
   
    echo "<a href="http://example.com">click here</a>";
   
   

   
   
   

   Syntax highlighting will make such mistakes super obvious. It's important to remember to use backslashes for escaping " double quotes, or ' single quotes - depending on which was used as string enclosure.

   
   
   
   
   
   • For convenience you should prefer outer single quotes when outputting plain HTML with double quotes within.
   
   
   • Use double quoted strings if you want to interpolate variables, but then watch out for escaping literal " double quotes.
   
   
   • For lengthier output, prefer multiple echo/print lines instead of escaping in and out. Better yet consider a HEREDOC section.
   
   
   
   

   See also What is the difference between single-quoted and double-quoted strings in PHP?.

   
   


2. 
   

   Unclosed strings

   
   
   

   If you miss a closing " then a syntax error typically materializes later. An unterminated string will often consume a bit of code until the next intended string value:

   
   
   

                                                          ⇓
   
   echo "Some text", $a_variable, "and some runaway string ;
   
   success("finished");
   
            ⇯
   
   

   
   
   

   It's not just literal T_STRINGs which the parser may protest then. Another frequent variation is an Unexpected '>' for unquoted literal HTML.

   
   


3. 
   

   Non-programming string quotes

   
   
   

   If you copy and paste code from a blog or website, you sometimes end up with invalid code. Typographic quotes aren't what PHP expects:

   
   
   

   $text = ’Something something..’ + ”these ain't quotes”;
   
   

   
   
   

   Typographic/smart quotes are Unicode symbols. PHP treats them as part of adjoining alphanumeric text. For example ”these is interpreted as a constant identifier. But any following text literal is then seen as a bareword/T_STRING by the parser.

   
   


4. 
   

   The missing semicolon; again

   
   
   

   If you have an unterminated expression in previous lines, then any following statement or language construct gets seen as raw identifier:

   
   
   

          ⇓
   
   func1()
   
   function2();
   
   

   
   
   

   PHP just can't know if you meant to run two functions after another, or if you meant to multiply their results, add them, compare them, or only run one || or the other.

   
   


5. 
   

   Short open tags and <?xml headers in PHP scripts

   
   
   

   This is rather uncommon. But if short_open_tags are enabled, then you can't begin your PHP scripts with an XML declaration:

   
   
   

         ⇓
   
   <?xml version="1.0"?>
   
   

   
   
   

   PHP will see the <? and reclaim it for itself. It won't understand what the stray xml was meant for. It'll get interpreted as constant. But the version will be seen as another literal/constant. And since the parser can't make sense of two subsequent literals/values without an expression operator in between, that'll be a parser failure.

   
   


6. 
   

   Invisible Unicode characters

   
   
   

   A most hideous cause for syntax errors are Unicode symbols, such as the non-breaking space. PHP allows Unicode characters as identifier names. If you get a T_STRING parser complaint for wholly unsuspicious code like:

   
   
   

   <?php
   
       print 123;
   
   

   
   
   

   You need to break out another text editor. Or an hexeditor even. What looks like plain spaces and newlines here, may contain invisible constants. Java-based IDEs are sometimes oblivious to an UTF-8 BOM mangled within, zero-width spaces, paragraph separators, etc. Try to reedit everything, remove whitespace and add normal spaces back in.

   
   
   

   You can narrow it down with with adding redundant ; statement separators at each line start:

   
   
   

   <?php
   
       ;print 123;
   
   

   
   
   

   The extra ; semicolon here will convert the preceding invisible character into an undefined constant reference (expression as statement). Which in return makes PHP produce a helpful notice.

   
   


7. 
   

   The `$` sign missing in front of variable names

   
   
   

   Variables in PHP are represented by a dollar sign followed by the name of the variable.

   
   
   

   The dollar sign ($) is a sigil that marks the identifier as a name of a variable. Without this sigil, the identifier could be a language keyword or a constant.

   
   
   

   This is a common error when the PHP code was "translated" from code written in another language (C, Java, JavaScript, etc.). In such cases, a declaration of the variable type (when the original code was written in a language that uses typed variables) could also sneak out and produce this error.

   
   


8. 
   

   Escaped Quotation marks

   
   
   

   If you use in a string, it has a special meaning. This is called an "Escape Character" and normally tells the parser to take the next character literally.

   
   
   

   Example: echo 'Jim said 'Hello''; will print Jim said 'hello'

   
   
   

   If you escape the closing quote of a string, the closing quote will be taken literally and not as intended, i.e. as a printable quote as part of the string and not close the string. This will show as a parse error commonly after you open the next string or at the end of the script.

   
   
   

   Very common error when specifiying paths in Windows: "C:xampphtdocs" is wrong. You need "C:\xampp\htdocs\".

   
   

Unexpected (

Opening parentheses typically follow language constructs such as if/foreach/for/array/list or start an arithmetic expression. They're syntactically incorrect after "strings", a previous (), a lone $, and in some typical declaration contexts.

1. 
   

   Function declaration parameters

   
   
   

   A rarer occurrence for this error is trying to use expressions as default function parameters. This is not supported, even in PHP7:

   
   
   

   function header_fallback($value, $expires = time() + 90000) {
   
   

   
   
   

   Parameters in a function declaration can only be literal values or constant expressions. Unlike for function invocations, where you can freely use whatever(1+something()*2) etc.

   
   


2. 
   

   Class property defaults

   
   
   

   Same thing for class member declarations, where only literal/constant values are allowed, not expressions:

   
   
   

   class xyz {                   ⇓
   
       var $default = get_config("xyz_default");
   
   

   
   
   

   Put such things in the constructor.
   See also Why don't PHP attributes allow functions?

   
   
   

   Again note that PHP 7 only allows var $xy = 1 + 2 +3; constant expressions there.

   
   


3. 
   

   JavaScript syntax in PHP

   
   
   

   Using JavaScript or jQuery syntax won't work in PHP for obvious reasons:

   
   
   

   <?php      ⇓
   
       print $(document).text();
   
   

   
   
   

   When this happens, it usually indicates an unterminated preceding string; and literal <script> sections leaking into PHP code context.

   
   


4. 
   

   isset(()), empty, key, next, current

   
   
   

   Both isset() and empty() are language built-ins, not functions. They need to access a variable directly. If you inadvertently add a pair of parentheses too much, then you'd create an expression however:

   
   
   

             ⇓
   
   if (isset(($_GET["id"]))) {
   
   

   
   
   

   The same applies to any language construct that requires implicit variable name access. These built-ins are part of the language grammar, therefore don't permit decorative extra parentheses.

   
   
   

   User-level functions that require a variable reference -but get an expression result passed- lead to runtime errors instead.

   
   

Unexpected )

1. 
   

   Absent function parameter

   
   
   

   You cannot have stray commas last in a function call. PHP expects a value there and thusly complains about an early closing ) parenthesis.

   
   
   

                 ⇓
   
   callfunc(1, 2, );
   
   

   
   
   

   A trailing comma is only allowed in array() or list() constructs.

   
   


2. 
   

   Unfinished expressions

   
   
   

   If you forget something in an arithmetic expression, then the parser gives up. Because how should it possibly interpret that:

   
   
   

                  ⇓
   
   $var = 2 * (1 + );
   
   

   
   
   

   And if you forgot the closing ) even, then you'd get a complaint about the unexpected semicolon instead.

   
   


3. 
   

   Foreach as constant

   
   
   

   For forgotten variable $ prefixes in control statements you will see:

   
   
   

                      ↓    ⇓
   
   foreach ($array as wrong) {
   
   

   
   
   

   PHP here sometimes tells you it expected a :: instead. Because a class::$variable could have satisfied the expected $variable expression..

   
   

Unexpected {

Curly braces { and } enclose code blocks. And syntax errors about them usually indicate some incorrec nesting.

1. 
   

   Unmatched subexpressions in an if

   
   
   

   Most commonly unbalanced ( and ) are the cause if the parser complains about the opening curly { appearing too early. A simple example:

   
   
   

                                 ⇓
   
   if (($x == $y) && (2 == true) {
   
   

   
   
   

   Count your parens or use an IDE which helps with that. Also don't write code without any spaces. Readability counts.

   
   


2. 
   

   { and } in expression context

   
   
   

   You can't use curly braces in expressions. If you confuse parentheses and curlys, it won't comply to the language grammer:

   
   
   

              ⇓
   
   $var = 5 * {7 + $x};
   
   

   
   
   

   There are a few exceptions for identifier construction, such as local scope variable ${references}.

   
   


3. 
   

   Variable variables or curly var expressions

   
   
   

   This is pretty rare. But you might also get { and } parser complaints for complex variable expressions:

   
   
   

                         ⇓
   
   print "Hello {$world[2{]} !";
   
   

   
   
   

   Though there's a higher likelihood for an unexpected } in such contexts.

   
   

Unexpected }

When getting an "unexpected }" error, you've mostly closed a code block too early.

1. 
   

   Last statement in a code block

   
   
   

   It can happen for any unterminated expression.

   
   
   

   And if the last line in a function/code block lacks a trailing ; semicolon:

   
   
   

   function whatever() {
   
       doStuff()
   
   }            ⇧
   
   

   
   
   

   Here the parser can't tell if you perhaps still wanted to add + 25; to the function result or something else.

   
   


2. 
   

   Invalid block nesting / Forgotten {

   
   
   

   You'll sometimes see this parser error when a code block was } closed too early, or you forgot an opening { even:

   
   
   

   function doStuff() {
   
       if (true)    ⇦
   
           print "yes";
   
       }
   
   }   ⇧
   
   

   
   
   

   In above snippet the if didn't have an opening { curly brace. Thus the closing } one below became redundant. And therefore the next closing }, which was intended for the function, was not associatable to the original opening { curly brace.

   
   
   

   Such errors are even harder to find without proper code indentation. Use an IDE and bracket matching.

   
   

Unexpected {, expecting (

Language constructs which require a condition/declaration header and a code block will trigger this error.

1. 
   

   Parameter lists

   
   
   

   For example misdeclared functions without parameter list are not permitted:

   
   
   

                    ⇓
   
   function whatever {
   
   }
   
   

   
   


2. 
   

   Control statement conditions

   
   
   

   And you can't likewise have an if without condition.

   
   
   

     ⇓
   
   if {
   
   }
   
   

   
   
   

   Which doesn't make sense, obviously. The same thing for the usual suspects, for/foreach, while/do, etc.

   
   
   

   
   

   If you've got this particular error, you definitely should look up some manual examples.

   
   

   
   

Unexpected $end

When PHP talks about an "unexpected $end", it means that your code ended prematurely. (The message is a bit misleading when taken literally. It's not about a variable named "$end", as sometimes assumed by newcomers. It refers to the "end of file", EOF.)

Cause: Unbalanced { and } for code blocks / and function or class declarations.

It's pretty much always about a missing } curly brace to close preceding code blocks.

• Again, use proper indentation to avoid such issues.



• 
  

  Use an IDE with bracket matching, to find out where the } is amiss.
  There are keyboard shortcuts in most IDEs and text editors:

  
  
  
  
  
  • NetBeans, PhpStorm, Komodo: Ctrl[ and Ctrl]
    
  
  
  • Eclipse, Aptana: CtrlShiftP
    
  
  
  • Atom, Sublime: Ctrlm - Zend Studio CtrlM
    
  
  
  • Geany, Notepad++: CtrlB - Joe: CtrlG - Emacs: C-M-n - Vim: %
    
    
  
  
  
  

Most IDEs also highlight matching braces, brackets and parentheses.
Which makes it pretty easy to inspect their correlation:

Unterminated expressions

And Unexpected $end syntax/parser error can also occur for unterminated expressions or statements:

• 
  $var = func(1,
?>EOF
  

So, look at the end of scripts first. A trailing ; is often redundant for the last statement in any PHP script. But you should have one. Precisely because it narrows such syntax issues down.

Indented HEREDOC markers

Another common occurrence appears with HEREDOC or NOWDOC strings. The terminating marker goes ignored with leading spaces, tabs, etc.:

print <<< END

    Content...

    Content....

  END;

# ↑ terminator isn't exactly at the line start

Therefore the parser assumes the HEREDOC string to continue until the end of the file (hence "Unexpected $end"). Pretty much all IDEs and syntax-highlighting editors will make this obvious or warn about it.

Escaped Quotation marks

If you use in a string, it has a special meaning. This is called an "Escape Character" and normally tells the parser to take the next character literally.

Example: echo 'Jim said 'Hello''; will print Jim said 'hello'

If you escape the closing quote of a string, the closing quote will be taken literally and not as intended, i.e. as a printable quote as part of the string and not close the string. This will show as a parse error commonly after you open the next string or at the end of the script.

Very common error when specifiying paths in Windows: "C:xampphtdocs" is wrong. You need "C:\xampp\htdocs\".

Alternative syntax

Somewhat rarer you can see this syntax error when using the alternative syntax for statement/code blocks in templates. Using if: and else: and a missing endif; for example.

See also:

• PHP syntax error “unexpected $end”


• Parse error: Syntax error, unexpected end of file in my PHP code


• Parse error syntax error unexpected end of file, using PHP


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• "Parse error: syntax error, unexpected $end" For my uni registration assignment


• Fixing PHP Errors: PHP Error #3: Unexpected end of file

Unexpected T_IF

Unexpected T_ELSEIF

Unexpected T_ELSE

Unexpected T_ENDIF

Conditional control blocks if, elseif and else follow a simple structure. When you encounter a syntax error, it's most likely just invalid block nesting → with missing { curly braces } - or one too many.

1. 
   

   Missing { or } due to incorrect indentation

   
   
   

   Mismatched code braces are common to less well-formatted code such as:

   
   
   

   if((!($opt["uniQartz5.8"]!=$this->check58)) or (empty($_POST['poree']))) {if
   
   ($true) {echo"halp";} elseif((!$z)or%b){excSmthng(False,5.8)}elseif (False){
   
   

   
   
   

   If your code looks like this, start afresh! Otherwise it's unfixable to you or anyone else. There's no point in showcasing this on the internet to inquire for help.

   
   
   

   You will only be able to fix it, if you can visually follow the nested structure and relation of if/else conditionals and their { code blocks }. Use your IDE to see if they're all paired.

   
   
   

   if (true) {
   
        if (false) {
   
                 …
   
        }
   
        elseif ($whatever) {
   
            if ($something2) {
   
                …
   
            } 
   
            else {
   
                …
   
            }
   
        }
   
        else {
   
            …
   
        }
   
        if (false) {    //   a second `if` tree
   
            …
   
        }
   
        else {
   
            …
   
        }
   
   }
   
   elseif (false) {
   
       …
   
   }
   
   

   
   
   

   Any double } } will not just close a branch, but a previous condition structure. Therefore stick with one coding style; don't mix and match in nested if/else trees.

   
   
   

   Apart from consistency here, it turns out helpful to avoid lengthy conditions too. Use temporary variables or functions to avoid unreadable if-expressions.

   
   


2. 
   

   IF cannot be used in expressions

   
   
   

   A surprisingly frequent newcomer mistake is trying to use an if statement in an expression, such as a print statement:

   
   
   

                      ⇓
   
   echo "<a href='" . if ($link == "example.org") { echo …
   
   

   
   
   

   Which is invalid of course.

   
   
   

   You can use a ternary conditional, but beware of readability impacts.

   
   
   

   echo "<a href='" . ($link ? "http://yes" : "http://no") . "</a>";
   
   

   
   
   

   Otherwise break such output constructs up: use multiple ifs and echos.
   
   Better yet, use temporary variables, and place your conditionals before:

   
   
   

   if ($link) { $href = "yes"; } else { $href = "no"; }
   
   echo "<a href='$href'>Link</a>";
   
   

   
   
   

   Defining functions or methods for such cases often makes sense too.

   
   
   

   Control blocks don't return "results"

   
   
   

   Now this is less common, but a few coders even try to treat if as if it could return a result:

   
   
   

   $var = if ($x == $y) { "true" };
   
   

   
   
   

   Which is structurally identical to using if within a string concatenation / expression.

   
   
   
   
   
   • But control structures (if / foreach / while) don't have a "result".
   
   
   • The literal string "true" would also just be a void statement.
     
     
     
     
   
   
   
   

   You'll have to use an assignment in the code block:

   
   
   

   if ($x == $y) { $var = "true"; }
   
   

   
   
   

   Alternatively, resort to a ?: ternary comparison.

   
   
   

   If in If

   
   
   

   You cannot nest an if within a condition either:

   
   
   

                       ⇓
   
   if ($x == true and (if $y != false)) { ... }
   
   

   
   
   

   Which is obviously redundant, because the and (or or) already allows chaining comparisons.

   
   


3. 
   

   Forgotton ; semicolons

   
   
   

   Once more: Each control block needs to be a statement. If the previous code piece isn't terminated by a semicolon, then that's a guaranteed syntax error:

   
   
   

                   ⇓
   
   $var = 1 + 2 + 3
   
   if (true) { … }
   
   

   
   
   

   Btw, the last line in a {…} code block needs a semicolon too.

   
   


4. 
   

   Semicolon too early

   
   
   

   Now it's probably wrong to blame a particular coding style, as this pitfall is too easy to overlook:

   
   
   

               ⇓
   
   if ($x == 5);
   
   {
   
       $y = 7;
   
   }
   
   else           ←
   
   {
   
       $x = -1;    
   
   }
   
   

   
   
   

   Which happens more often than you might imagine.

   
   
   
   
   
   • When you terminate the if () expression with ; it will execute a void statement. The ; becomes a an empty {} of its own!
   
   
   • The {…} block thus is detached from the if, and would always run.
   
   
   • So the else no longer had a relation to an open if construct,
     which is why this would lead to an Unexpected T_ELSE syntax error.
     
     
     
     
   
   
   
   

   Which also explains a likewise subtle variation of this syntax error:

   
   
   

   if ($x) { x_is_true(); }; else { something_else(); };
   
   

   
   
   

   Where the ; after the code block {…} terminates the whole if
   construct, severing the else branch syntactically.

   
   


5. 
   

   Not using code blocks

   
   
   

   It's syntactically allowed to omit curly braces {…} for code blocks in if/elseif/else branches. Which sadly is a syntax style very common to unversed coders. (Under the false assumption this was quicker to type or read).

   
   
   

   However that's highly likely to trip up the syntax. Sooner or later additional statements will find their way into the if/else branches:

   
   
   

   if (true)
   
       $x = 5;
   
   elseif (false)
   
       $x = 6;
   
       $y = 7;     ←
   
   else
   
       $z = 0;
   
   

   
   
   

   But to actually use code blocks, you do have to write {…} them as such!

   
   
   

   
   

   Even seasoned programmers avoid this braceless syntax, or at least
   understand it as an exceptional exception to the rule.

   
   

   
   


6. 
   

   Else / Elseif in wrong order

   
   
   

   One thing to remind yourself is the conditional order, of course.

   
   
   

   if ($a) { … }
   
   else { … }
   
   elseif ($b) { … }
   
   ↑
   
   

   
   
   

   You can have as many elseifs as you want, but else has to go last. That's just how it is.

   
   


7. 
   

   Class declarations

   
   
   

   As mentioned above, you can't have control statements in a class declaration:

   
   
   

   class xyz {
   
       if (true) {
   
           function ($var) {}
   
       }
   
   

   
   
   

   You either forgot a function definition, or closed one } too early in such cases.

   
   


8. 
   

   Unexpected T_ELSEIF / T_ELSE

   
   
   

   When mixing PHP and HTML, the closing } for an if/elseif must be in the same PHP block <?php ?> as the next elseif/else. This will generate an error as the closing } for the if needs to be part of the elseif:

   
   
   

   <?php if ($x) { ?>
   
       html
   
   <?php } ?>
   
   <?php elseif ($y) { ?>
   
       html
   
   <?php } ?>
   
   

   
   
   

   The correct form <?php } elseif:

   
   
   

   <?php if ($x) { ?>
   
       html
   
   <?php } elseif ($y) { ?>
   
       html
   
   <?php } ?>
   
   

   
   
   

   This is more or less a variation of incorrect indentation - presumably often based on wrong coding intentions.
   
   You cannot mash other statements inbetween if and elseif/else structural tokens:

   
   
   

   if (true) {
   
   }
   
   echo "in between";    ←
   
   elseif (false) {
   
   }
   
   ?> text <?php      ←
   
   else {
   
   }
   
   

   
   
   

   Either can only occur in {…} code blocks, not in between control structure tokens.

   
   
   
   
   
   • This wouldn't make sense anyway. It's not like that there was some "undefined" state when PHP jumps between if and else branches.
   
   
   • You'll have to make up your mind where print statements belong to / or if they need to be repeated in both branches.
     
     
     
     
   
   
   
   

   Nor can you part an if/else between different control structures:

   
   
   

   foreach ($array as $i) {
   
       if ($i) { … }
   
   }
   
   else { … }
   
   

   
   
   

   There is no syntactic relation between the if and else. The foreach lexical scope ends at }, so there's no point for the if structure to continue.

   
   


9. 
   

   T_ENDIF

   
   
   

   If an unexpected T_ENDIF is complained about, you're using the alternative syntax style if: ⋯ elseif: ⋯ else: ⋯ endif;. Which you should really think twice about.

   
   
   
   
   

   • A common pitfall is confusing the eerily similar : colon for a ; semicolon. (Covered in "Semicolon too early")

   
   

   • As indentation is harder to track in template files, the more when using the alternative syntax - it's plausible your endif; does not match any if:.

   
   

   • Using } endif;
     is a doubled if-terminator.
     
     
     

   
   
   
   

   While an "unexpected $end" is usually the price for a forgotten closing } curly brace.

   
   


10. 
    

    Assignment vs. comparison

    
    
    

    So, this is not a syntax error, but worth mentioning in this context:

    
    
    

           ⇓
    
    if ($x = true) { }
    
    else { do_false(); }
    
    

    
    
    

    That's not a ==/=== comparison, but an = assignment. This is rather subtle, and will easily lead some users to helplessly edit whole condition blocks. Watch out for unintended assignments first - whenver you experience a logic fault / misbeheviour.

    
    

Unexpected T_IF

Unexpected T_FOREACH

Unexpected T_FOR

Unexpected T_WHILE

Unexpected T_DO

Unexpected T_ECHO

Control constructs such as if, foreach, for, while, list, global, return, do, print, echo may only be used as statements. They usually reside on a line by themselves.

1. 
   

   Semicolon; where you at?

   
   
   

   Pretty universally have you missed a semicolon in the previous line if the parser complains about a control statement:

   
   
   

                ⇓
   
   $x = myfunc()
   
   if (true) {
   
   

   
   
   

   Solution: look into the previous line; add semicolon.

   
   


2. 
   

   Class declarations

   
   
   

   Another location where this occurs is in class declarations. In the class section you can only list property initializations and method sections. No code may reside there.

   
   
   

   class xyz {
   
       if (true) {}
   
       foreach ($var) {}
   
   

   
   
   

   Such syntax errors commonly materialize for incorrectly nested { and }. In particular when function code blocks got closed too early.

   
   


3. 
   

   Statements in expression context

   
   
   

   Most language constructs can only be used as statements. They aren't meant to be placed inside other expressions:

   
   
   

                      ⇓
   
   $var = array(1, 2, foreach($else as $_), 5, 6);
   
   

   
   
   

   Likewise can't you use an if in strings, math expressions or elsewhere:

   
   
   

                  ⇓
   
   print "Oh, " . if (true) { "you!" } . " won't work";
   
   // Use a ternary condition here instead, when versed enough.
   
   

   
   
   

   ^{For embedding if-like conditions in an expression specifically, you often want to use a ?: ternary evaluation.}

   
   
   

   The same applies to for, while, global, echo and a lesser extend list.

   
   
   

             ⇓
   
   echo 123, echo 567, "huh?";
   
   

   
   
   

   Whereas print() is a language builtin that may be used in expression context. (But rarely makes sense.)

   
   


4. 
   

   Reserved keywords as identifiers

   
   
   

   You also can't use do or if and other language constructs for user-defined functions or class names. (Perhaps in PHP7. But even then it wouldn't be advisable.)

   
   

Unexpected T_IS_EQUAL

Unexpected T_IS_GREATER_OR_EQUAL

Unexpected T_IS_IDENTICAL

Unexpected T_IS_NOT_EQUAL

Unexpected T_IS_NOT_IDENTICAL

Unexpected T_IS_SMALLER_OR_EQUAL

Unexpected <

Unexpected >

Comparison operators such as ==, >=, ===, !=, <>, !== and <= or < and > mostly should be used just in expressions, such as if expressions. If the parser complains about them, then it often means incorrect paring or mismatched ( ) parens around them.

1. 
   

   Parens grouping

   
   
   

   In particular for if statements with multiple comparisons you must take care to correctly count opening and closing parenthesis:

   
   
   

                           ⇓
   
   if (($foo < 7) && $bar) > 5 || $baz < 9) { ... }
   
                         ↑
   
   

   
   
   

   Here the if condition here was already terminated by the )

   
   
   

   Once your comparisons become sufficiently complex it often helps to split it up into multiple and nested if constructs rather.

   
   


2. 
   

   isset() mashed with comparing

   
   
   

   A common newcomer is pitfal is trying to combine isset() or empty() with comparisons:

   
   
   

                           ⇓
   
   if (empty($_POST["var"] == 1)) {
   
   

   
   
   

   Or even:

   
   
   

                       ⇓
   
   if (isset($variable !== "value")) {
   
   

   
   
   

   This doesn't make sense to PHP, because isset and empty are language constructs that only accept variable names. It doesn't make sense to compare the result either, because the output is only/already a boolean.

   
   


3. 
   

   Confusing >= greater-or-equal with => array operator

   
   
   

   Both operators look somewhat similar, so they sometimes get mixed up:

   
   
   

            ⇓
   
   if ($var => 5) { ... }
   
   

   
   
   

   You only need to remember that this comparison operator is called "greater than or equal" to get it right.

   
   
   

   See also: If statement structure in PHP

   
   


4. 
   

   Nothing to compare against

   
   
   

   You also can't combine two comparisons if they pertain the same variable name:

   
   
   

                    ⇓
   
   if ($xyz > 5 and < 100)
   
   

   
   
   

   PHP can't deduce that you meant to compare the initial variable again. Expressions are usually paired according to operator precedence, so by the time the < is seen, there'd be only a boolean result left from the original variable.

   
   
   

   See also: unexpected T_IS_SMALLER_OR_EQUAL

   
   


5. 
   

   Comparison chains

   
   
   

   You can't compare against a variable with a row of operators:

   
   
   

                     ⇓
   
    $reult = (5 < $x < 10);
   
   

   
   
   

   This has to be broken up into two comparisons, each against $x.

   
   
   

   This is actually more a case of blacklisted expressions (due to equivalent operator associativity). It's syntactically valid in a few C-style languages, but PHP wouldn't interpret it as expected comparison chain either.

   
   


6. 
   

   Unexpected >
   Unexpected <
   

   
   
   

   The greater than > or less than < operators don't have a custom T_XXX tokenizer name. And while they can be misplaced like all they others, you more often see the parser complain about them for misquoted strings and mashed HTML:

   
   
   

                           ⇓
   
   print "<a href='z">Hello</a>";
   
                    ↑
   
   

   
   
   

   This amounts to a string "<a href='z" being compared > to a literal constant Hello and then another < comparison. Or that's at least how PHP sees it. The actual cause and syntax mistake was the premature string " termination.

   
   
   

   It's also not possible to nest PHP start tags:

   
   
   

   <?php echo <?php my_func(); ?>
   
              ↑
   
   

   
   

See also:

• php unexpected T_IS_NOT_EQUAL error


• syntax error, unexpected T_IS_EQUAL


• Syntax error on return statement


• http://forums.phpfreaks.com/topic/96891-parse-error-syntax-error-unexpected-t-is-not-identical-expecting-or/

Unexpected '?'

If you are trying to use the null coalescing operator ?? in a version of PHP prior to PHP 7 you will get this error.

<?= $a ?? 2; // works in PHP 7+

<?= (!empty($a)) ? $a : 2; // All versions of PHP

Unexpected '?', expecting variable

A similar error can occur for nullable types, as in:

function add(?int $sum): ?int {

Which again indicates an outdated PHP version being used (either the CLI version php -v or the webserver bound one phpinfo();).

Unexpected T_LNUMBER

The token T_LNUMBER refers to a "long" / number.

1. 
   

   Invalid variable names

   
   
   

   In PHP, and most other programming languages, variables cannot start with a number. The first character must be alphabetic or an underscore.

   
   
   

   $1   // Bad
   
   $_1  // Good
   
   

   
   
   

   

   
   
   
   
   
   • 
     

     Quite often comes up for using preg_replace-placeholders "$1" in PHP context:

     
     
     

     #                         ↓            ⇓  ↓
     
     preg_replace("/#(w+)/e",  strtopupper($1) )
     
     

     
     
     

     Where the callback should have been quoted. (Now the /e regex flag has been deprecated. But it's sometimes still misused in preg_replace_callback functions.)

     
     
   
   
   • 
     

     The same identifier constraint applies to object properties, btw.

     
     
     

            ↓
     
     $json->0->value
     
     

     
     
   
   

   • While the tokenizer/parser does not allow a literal $1 as variable name, one could use ${1} or ${"1"}. Which is a syntactic workaround for non-standard identifiers. (It's best to think of it as a local scope lookup. But generally: prefer plain arrays for such cases!)

   
   

   • Amusingly, but very much not recommended, PHPs parser allows Unicode-identifiers; such that $➊ would be valid. (Unlike a literal 1).

   
   
   
   


2. 
   

   Stray array entry

   
   
   

   An unexpected long can also occur for array declarations - when missing , commas:

   
   
   

   #            ↓ ↓
   
   $xy = array(1 2 3);
   
   

   
   
   

   Or likewise function calls and declarations, and other constructs:

   
   
   
   
   
   • func(1, 2 3);
   
   
   • function xy($z 2);
   
   
   • 
     for ($i=2 3<$z)
     
     
     
   
   
   
   

   So usually there's one of ; or , missing for separating lists or expressions.

   
   


3. 
   

   Misquoted HTML

   
   
   

   And again, misquoted strings are a frequent source of stray numbers:

   
   
   

   #                 ↓ ↓          
   
   echo "<td colspan="3">something bad</td>";
   
   

   
   
   

   Such cases should be treated more or less like Unexpected T_STRING errors.

   
   


4. 
   

   Other identifiers

   
   
   

   Neither functions, classes, nor namespaces can be named beginning with a number either:

   
   
   

            ↓
   
   function 123shop() {
   
   

   
   
   

   Pretty much the same as for variable names.

   
   

Unexpected '='

This can be caused by having invalid characters in a variable name. Variables names must follow these rules:

Variable names follow the same rules as other labels in PHP. A valid variable name starts with a letter or underscore, followed by any number of letters, numbers, or underscores. As a regular expression, it would be expressed thus: '[a-zA-Z_x7f-xff][a-zA-Z0-9_x7f-xff]*'

Unexpected 'continue' (T_CONTINUE)

continue is a statement (like for, or if) and must appear standalone. It cannot be used as part of an expression. Partly because continue doesn't return a value, but in an expression every sub-expression must result in some value so the overall expression results in a value. That's the difference between a statement and an expression.

That means continue cannot be used in a ternary statement or any statement that requires a return value.

Unexpected 'break' (T_BREAK)

Same goes for break; of course. It's also not usable in expression context, but a strict statement (on the same level as foreach or an if block).

Unexpected 'return' (T_RETURN)

Now this might be more surprising for return, but that's also just a block-level statement. It does return a value (or NULL) to the higher scope/function, but it does not evaluate as expression itself. → That is: there's no point in doing return(return(false);;

Unexpected 'endwhile' (T_ENDWHILE)

The syntax is using a colon - if there is no colon the above error will occur

<?php while($query->fetch()): ?>

 .... 

<?php endwhile; ?>

Alternative to this syntax is using curly brackets

<?php while($query->fetch()) { ?>

  ....

<?php } ?>

http://php.net/manual/en/control-structures.while.php