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run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(preg_match("^plan_package_([\d]+)$", "plan_package_12", $match)); var_dump($match);
Output for 5.2.0 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_match(): No ending delimiter '^' found in /in/7h159 on line 3 bool(false) NULL
Output for hhvm-3.10.0 - 3.12.0
Warning: No ending delimiter '^' found: [^plan_package_([\d]+)$] in /in/7h159 on line 3 bool(false) NULL
Output for 4.3.11 - 5.1.6
Warning: preg_match(): No ending delimiter '^' found in /in/7h159 on line 3 bool(false) array(0) { }
Output for 4.3.0 - 4.3.10
Warning: No ending delimiter '^' found in /in/7h159 on line 3 bool(false) array(0) { }