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<?php $regex = '[^a]*a\\{'; $test_string = 'AAAAAAAAAAAAAA{AA'; echo "1:".mb_ereg_replace('/'.$regex.'/i','WORKED',$test_string)."\n"; echo "2:".preg_replace('/'.$regex.'/ui','WORKED',$test_string)."\n"; echo "3:".preg_replace('/'.$regex.'/i','WORKED',$test_string)."\n";

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