<?php $words=array("ann@ibbeck.de"=>"kan", "Petermann@ibbeck.de"=>"ap", "_animal_sound_"=>"MEooow"); $source="ann@ibbeck.de , Petermann@ibbeck.de"; echo (preg_replace_callback("/\b_(\w*)_\b/", function($match) use ($words) { if(isset($words[$match[0]])){ return ($words[$match[0]]); }else{ return($match[0]); } }, $source)); ?>
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