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Asked: 2026-05-22T00:54:50+00:00

Is there any quick function that will convert: HtTp://www.ExAmPle.com/blah to http://www.example.com/blah Basically I want

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Is there any quick function that will convert: HtTp://www.ExAmPle.com/blah to http://www.example.com/blah

Basically I want to lower case the case-insensitive parts of a url.

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  1. Editorial Team

    Since you asked for “quick,” here’s a one-liner that does the job:

    $url = 'HtTp://User:Pass@www.ExAmPle.com:80/Blah';

echo preg_replace_callback(
  '#(^[a-z]+://)(.+@)?([^/]+)(.*)$#i',
  create_function('$m',
                  'return strtolower($m[1]).$m[2].strtolower($m[3]).$m[4];'),
  $url);

    Outputs:

    http://User:Pass@www.example.com:80/Blah

    EDIT/ADD:

    I’ve tested, and this version is about 55% faster than using preg_replace_callback with an anonymous function:

    echo preg_replace(
  '#(^[a-z]+://)(.+@)?([^/]+)(.*)$#ei',
  "strtolower('\\1').'\\2'.strtolower('\\3').'\\4'",
  $url);
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