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run code in 150+ php & hhvm versions
Bugs & Features
<?php $regex = '((?!a).*)a\{'; $test_string = 'AAAAAAAAAAAAAA{AA'; echo "2:".preg_replace('/'.$regex.'/u','WORKED',$test_string)."\n"; echo "3:".preg_replace('/'.$regex.'/','WORKED',$test_string)."\n";
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
2:AAAAAAAAAAAAAA{AA 3:AAAAAAAAAAAAAA{AA