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run code in 150+ php & hhvm versions
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<?php $input = 'S1G5AB'; // given this $store = '5I6GAB'; // actually this $regex = implode('', array_map( function ($char) { echo $char; return $char; static $map = ['S'=>'[S5]','5'=>'[S5]','1'=>'[1I]','I'=>'[1I]','G'=>'[6G]','6'=>'[6G]']; return array_key_exists($char, $map) ? $map[$char] : $char; }. str_split($input) )); echo $regex . PHP_EOL; echo (0 < preg_match("/$regex/", $store) ? 'Match' : 'No match');
based on S5AdC
Output for 7.1.0
Recoverable fatal error: Object of class Closure could not be converted to string in /in/USVPU on line 12
Process exited with code 255.
Output for 7.0.0 - 7.0.14
Catchable fatal error: Object of class Closure could not be converted to string in /in/USVPU on line 12
Process exited with code 255.
Output for hhvm-3.12.0
Catchable fatal error: Object of class Closure$;1522054892$189658c6db5f20677072ca8a415088a4$ could not be converted to string in /in/USVPU on line 12
Process exited with code 255.
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.4.0 - 5.6.28
Catchable fatal error: Object of class Closure could not be converted to string in /in/USVPU on line 13
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/USVPU on line 9
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/USVPU on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION, expecting ')' in /in/USVPU on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/USVPU on line 6
Process exited with code 255.