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run code in 200+ php & hhvm versions
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<?php $string = '^bar$'; if (preg_match("^\^.*?\$$", $string)) { print "true"; } else { print "false"; }
based on 9saBh
Output for 4.3.11 - 7.1.10
Warning: preg_match(): No ending delimiter '^' found in /in/7asIh on line 4 false
Output for 4.3.0 - 4.3.10
Warning: No ending delimiter '^' found in /in/7asIh on line 4 false