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run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(preg_match('^\d{3}:\d{2}:\d{2}', '010:00:00'));
Output for 4.3.11 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_match(): No ending delimiter '^' found in /in/aq5R0 on line 2 bool(false)
Output for hhvm-3.10.0 - 3.12.0
Warning: No ending delimiter '^' found: [^\d{3}:\d{2}:\d{2}] in /in/aq5R0 on line 2 bool(false)
Output for 4.3.0 - 4.3.10
Warning: No ending delimiter '^' found in /in/aq5R0 on line 2 bool(false)