- var_dump: documentation ( source)
- mb_ereg_match: documentation ( source)
- mb_ereg_replace: documentation ( source)
<?php
var_dump(mb_ereg_match("♥", "I ♥ PHP")); // should return true
var_dump(mb_ereg_match("♥", "♥ PHP"));
$pattern = "[♥]+";
$replacement = ":)";
var_dump(mb_ereg_replace($pattern,$replacement,"♥ PHP"));