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run code in 200+ php & hhvm versions
Bugs & Features
<?php $str = 'a\\\\,b,c\\,d'; var_dump(preg_split('/((?=[^\\]\\)|\G),/', $str));
based on kCqnM
Output for 4.3.11 - 7.1.7
Warning: preg_split(): Compilation failed: missing terminating ] for character class at offset 15 in /in/ud6bW on line 3 bool(false)
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: missing terminating ] for character class at offset 15 in /in/ud6bW on line 3 bool(false)