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run code in 150+ php & hhvm versions
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<?php preg_match("#(__)(?:[^])*?(__)#", 'Bize __ bu** __ lazımdır. __yok+-sa__ bu mu', $matches); print_r($matches);
Output for 5.2.0 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_match(): Compilation failed: missing terminating ] for character class at offset 17 in /in/lBTJe on line 2
Output for hhvm-3.10.0 - 3.12.0
Warning: Compilation failed: missing terminating ] for character class at offset 17 in /in/lBTJe on line 2
Output for 4.3.11 - 5.1.6
Warning: preg_match(): Compilation failed: missing terminating ] for character class at offset 17 in /in/lBTJe on line 2 Array ( )
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: missing terminating ] for character class at offset 17 in /in/lBTJe on line 2 Array ( )