Advanced PHP

Slow Regexps

Its often beneficial to replace regular expressions with simpler functions that have the same effect.

With Regular Expression

<?php
if (preg_match ('/(.*)\@(.*)/', $data, $matches)) {
    print $matches[2];
}
?>

Without Regular Expressions

<?php
$pos = strrpos ('@', $data);
if ($pos !== false) {
    print substr ($data, $pos);
}
?>

Fast Regexps

In other cases it may help to use regular expressions instead of custom parse routines in your PHP code.