I am using the preg_replace function in PHP and am trying to replace urls that users submit with bit.ly shortened links:
$comment = preg_replace( '/(http|ftp)+(s)?:(\/\/)((\w|\.)+)(\/)?(\S+)?/i', '', $strText );
This will show only the comment and "wipe out" the url. The question is how can I get the URL from the text and append it later?
Example from php.net:
<?php
// this text was used in 2002
// we want to get this up to date for 2003
$text = "April fools day is 04/01/2002\n";
$text.= "Last christmas was 12/24/2001\n";
// the callback function
function next_year($matches)
{
// as usual: $matches[0] is the complete match
// $matches[1] the match for the first subpattern
// enclosed in '(...)' and so on
return $matches[1].($matches[2]+1);
}
echo preg_replace_callback(
"|(\d{2}/\d{2}/)(\d{4})|",
"next_year",
$text);
?>
define a callback function that replaces the URL. It will receive the matches as a parameter, and inside you will form, depending on those matches, a replacement string.
