Basic url or domain RegEx to block users from adding a website to string












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I'm trying to prohibit users from including any website URLs in a description field. I'm working on a script to use RegEx to strip out any website references, but I'm running into some unforeseen challenges. This is the RegEx I'm using to find the url/website match (should match with or without protocol, i.e. http://www.google.com/q?some=val or simply google.com):



((?:https://)|(?:http://)|(?:www.))?([a-zA-Z0-9-.]+.[a-zA-Z]{2,3}(?:??)[a-zA-Z0-9-._?,'/\+&%$#=~]+)



A problem I'm seeing is that people don't include a space before a new sentence, so I'm getting false matches like in this example:




Some content here.But I forgot the space to start the second sentence.




Any ideas?










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    I'm trying to prohibit users from including any website URLs in a description field. I'm working on a script to use RegEx to strip out any website references, but I'm running into some unforeseen challenges. This is the RegEx I'm using to find the url/website match (should match with or without protocol, i.e. http://www.google.com/q?some=val or simply google.com):



    ((?:https://)|(?:http://)|(?:www.))?([a-zA-Z0-9-.]+.[a-zA-Z]{2,3}(?:??)[a-zA-Z0-9-._?,'/\+&%$#=~]+)



    A problem I'm seeing is that people don't include a space before a new sentence, so I'm getting false matches like in this example:




    Some content here.But I forgot the space to start the second sentence.




    Any ideas?










    share|improve this question

























      0












      0








      0







      I'm trying to prohibit users from including any website URLs in a description field. I'm working on a script to use RegEx to strip out any website references, but I'm running into some unforeseen challenges. This is the RegEx I'm using to find the url/website match (should match with or without protocol, i.e. http://www.google.com/q?some=val or simply google.com):



      ((?:https://)|(?:http://)|(?:www.))?([a-zA-Z0-9-.]+.[a-zA-Z]{2,3}(?:??)[a-zA-Z0-9-._?,'/\+&%$#=~]+)



      A problem I'm seeing is that people don't include a space before a new sentence, so I'm getting false matches like in this example:




      Some content here.But I forgot the space to start the second sentence.




      Any ideas?










      share|improve this question













      I'm trying to prohibit users from including any website URLs in a description field. I'm working on a script to use RegEx to strip out any website references, but I'm running into some unforeseen challenges. This is the RegEx I'm using to find the url/website match (should match with or without protocol, i.e. http://www.google.com/q?some=val or simply google.com):



      ((?:https://)|(?:http://)|(?:www.))?([a-zA-Z0-9-.]+.[a-zA-Z]{2,3}(?:??)[a-zA-Z0-9-._?,'/\+&%$#=~]+)



      A problem I'm seeing is that people don't include a space before a new sentence, so I'm getting false matches like in this example:




      Some content here.But I forgot the space to start the second sentence.




      Any ideas?







      regex






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 21 '18 at 19:20









      Ian TunbridgeIan Tunbridge

      479




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