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run code in 150+ php & hhvm versions
Bugs & Features
<?php $subject = " test test2 test3"; $subject = preg_replace("/\G(^ |\n )/m/g", "\t", $subject); echo $subject;
Output for 4.3.11 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_replace(): Unknown modifier '/' in /in/NMPtX on line 5
Output for hhvm-3.10.0 - 3.12.0
Warning: Unknown modifier '/': [/\G(^ | )/m/g] in /in/NMPtX on line 5
Output for 4.3.0 - 4.3.10
Warning: Unknown modifier '/' in /in/NMPtX on line 5