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run code in 150+ php & hhvm versions
Bugs & Features
<?php $quotedString = '"(?:[^"\\\\]*(?:\\\\.(*SKIP))?)*"'; $regex = "($quotedString)"; $string = 'This is "A test of the \"Emergency System\" here..."'; var_dump(preg_match($regex, $string, $match), $match);
Output for 4.4.9, 5.2.5 - 7.1.0
int(1) array(1) { [0]=> string(44) ""A test of the \"Emergency System\" here..."" }
Output for 5.2.0 - 5.2.4
Warning: preg_match(): Compilation failed: nothing to repeat at offset 18 in /in/VXnpG on line 8 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 18 in /in/VXnpG on line 8 bool(false) array(0) { }
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: nothing to repeat at offset 18 in /in/VXnpG on line 8 bool(false) array(0) { }