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run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(preg_match('/(*UCP)(?<=\b)рус(?:\b)/uis', 'рус'));
Output for 5.3.4 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
int(1)
Output for 4.4.9, 5.2.5 - 5.3.3
Warning: preg_match(): Compilation failed: (*VERB) not recognized at offset 5 in /in/nLiik on line 2 bool(false)
Output for 4.3.11 - 4.4.8, 5.0.0 - 5.2.4
Warning: preg_match(): Compilation failed: nothing to repeat at offset 1 in /in/nLiik on line 2 bool(false)
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: nothing to repeat at offset 1 in /in/nLiik on line 2 bool(false)