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run code in 200+ php & hhvm versions
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<?php //preg_match( '/^\[#(\d+)\]/', '[#1234] Subject', $matches); //echo $matches[0]; // 1234 if (preg_match("/php/", "php")) { print "Got match!\n"; } if (preg_match("/php/", "PHP")) { print "Got match!\n"; } if (preg_match("/php/i", "php")) { print "Got match!\n"; }
Output for 4.3.0 - 7.1.7, 7.2.0
Got match! Got match!
Output for 7.1.10

Process exited with code 137.