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run code in 150+ php & hhvm versions
Bugs & Features
<?php $regex = '/^(\/(\d+))+$/g'; $str = '/1/20/3'; preg_match_all( $regex, $str, $result ); var_dump( $result );
Output for 5.2.0 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_match_all(): Unknown modifier 'g' in /in/CO6KE on line 7 NULL
Output for hhvm-3.12.0
Warning: Unknown modifier 'g': [/^(\/(\d+))+$/g] in /in/CO6KE on line 7 NULL
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.3.11 - 5.1.6
Warning: preg_match_all(): Unknown modifier 'g' in /in/CO6KE on line 7 array(0) { }
Output for 4.3.0 - 4.3.10
Warning: Unknown modifier 'g' in /in/CO6KE on line 7 array(0) { }