- var_dump: documentation ( source)
- preg_split: documentation ( source)
<?php
$str = 'email already exists\r\n\r\nsuccess\r\n\r\ncoreg_status:duplicate\r\n\r\nlead_status:success\r\n';
$test = preg_split("/\n|\r/", $str, -1, PREG_SPLIT_NO_EMPTY);
var_dump($test);