How to add http if it doesn t exist in the URL

Question

How can I add http    to a URL if it doesn t already include a protocol  e g  http     https    or ftp      Example  addhttp  quot google com quot       http   google com addhttp  quot www google com quot       http   www google com addhttp  quot google com quot       http   google com addhttp  quot ftp   google com quot       ftp   google com addhttp  quot https   google com quot       https   google com addhttp  quot http   google com quot       http   google com addhttp  quot rubbish quot       http   rubbish

User · Answer

Simply check if there is a protocol  delineated by  quot     quot   and add  quot http    quot  if there isn t  if  false     strpos  url                 url    http        url     Note  This may be a simple and straightforward solution  but Jack s answer using parse url is almost as simple and much more robust  You should probably use that one

User · Answer

nickf s solution modified  function addhttp  url        if   preg match  quot   https     i quot    url   amp  amp   preg match  quot   ftps     i quot    url              url    quot http    quot     url            return  url

User · Answer

At the time of writing  none of the answers used a built-in function for this   function addScheme  url   scheme    http          return parse url  url  PHP URL SCHEME      null        scheme    url    url     echo addScheme  google com        http   google com  echo addScheme  https   google com        https   google com    See also  parse url

User · Answer

Scan the string for      If it does not have it  prepend http    to the string    Everything else just use the string as is  This will work unless you have a rubbish input string

User · Answer

lt  php     if   preg match  quot    http ftp    quot     POST  url                 POST  url      http       POST  url               url     POST  url      gt   This code will add http    to the URL if it   s not there

User · Answer

The best answer for this would be something like this  function addhttp  url   scheme  quot http    quot        return  url   empty parse url  url   scheme       scheme   ltrim  url          url     The protocol flexible  so the same function can be used with ftp  https  etc

User · Answer

Try this  It is not watertight1  but it might be good enough  function addhttp  url        if   preg match  quot    hf tt ps      quot    url              url    quot http    quot     url            return  url     1  That is  prefixes like  quot fttps    quot  are treated as valid

User · Answer

A modified version of  nickf code   function addhttp  url        if   preg match       f ht tps     i    url              url    http        url            return  url      Recognizes ftp     ftps     http    and https    in a case insensitive way

[php] How to add http:// if it doesn't exist in the URL

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