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run code in 200+ php & hhvm versions
Bugs & Features
<?php preg_match( '/bbl_nfs_prd_33333_12345_cnt/', 'cnt', $matches); echo $matches[0]; // 1234
Output for 5.5.0 - 7.2.0
Notice: Undefined offset: 0 in /in/HHEjQ on line 3
Output for 4.3.0 - 5.0.5, 5.1.1 - 5.4.45
Output for 5.1.0
<br /> <b>Fatal error</b>: fatal flex scanner internal error--end of buffer missed in <b>/in/HHEjQ</b> on line <b>3</b><br />
Process exited with code 255.