- preg_replace: documentation ( source)
<?php
$pattern = '/(\w)*/';
$limit = 10000;
$string = 'a';
for ( $i = 0; $i <= $limit; $i++ ) {
$string .= 'a';
//echo strlen($string) . "\n";
//echo mb_strlen($string);
}
echo strlen($string)."\n";
preg_replace($pattern, '', $string);
echo strlen($string)."\n";
echo 'done';