<?php function splitallowescape($str) { preg_match_all('/(?:[^\x5c,]|\x5c(?:.|$))+/', $str, $matches); foreach($matches[0] as $key => $match) { $matches[0][$key] = str_replace(array("\\\\"),array("\\"),$match); } return $matches[0]; } var_dump(splitallowescape("a,b")) ?>
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