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run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(preg_match('~(*UCP)\d{4,8}\sруб\b~u', '50000 рублей', $rg), $rg);
Output for 5.3.4 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
int(0) array(0) { }
Output for 5.2.5 - 5.3.3
Warning: preg_match(): Compilation failed: (*VERB) not recognized at offset 5 in /in/XQUM1 on line 2 bool(false) NULL
Output for 5.2.0 - 5.2.4
Warning: preg_match(): Compilation failed: nothing to repeat at offset 1 in /in/XQUM1 on line 2 bool(false) NULL
Output for 4.3.11 - 4.4.8, 5.0.0 - 5.1.6
Warning: preg_match(): Compilation failed: nothing to repeat at offset 1 in /in/XQUM1 on line 2 bool(false) array(0) { }
Output for 4.4.9
Warning: preg_match(): Compilation failed: (*VERB) not recognized at offset 5 in /in/XQUM1 on line 2 bool(false) array(0) { }
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: nothing to repeat at offset 1 in /in/XQUM1 on line 2 bool(false) array(0) { }