- var_dump: documentation ( source)
- str_replace: documentation ( source)
- preg_split: documentation ( source)
<?php
$emails = str_replace(' ','','ben@wearejh.com, john@wearejh.com, mike@wearejh.com');
$emails = preg_split('[-0-9a-zA-Z.+_]+@[-0-9a-zA-Z.+_]+\.[a-zA-Z]+','leowearejh.com');
var_dump($emails);