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run code in 150+ php & hhvm versions
Bugs & Features
<?php $string = 'foo'; var_export(preg_match('~foo', $string));
Output for 4.3.11 - 7.1.0
Warning: preg_match(): No ending delimiter '~' found in /in/kC80n on line 5 false
Output for 4.3.0 - 4.3.10
Warning: No ending delimiter '~' found in /in/kC80n on line 5 false