<?php $regex = '(((?!a).)*)*a\\{'; $test_string = 'AAAAAAAAAAAAAA{AA'; echo "1:".var_dump(mb_ereg_replace($regex,'WORKED',$test_string))."\n"; echo "2:".var_dump(preg_replace('/'.$regex.'/u','WORKED',$test_string))."\n"; echo "3:".preg_replace('/'.$regex.'/','WORKED',$test_string)."\n";
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