@ 2014-03-30T05:14:47Z <?php
$pattern="\( ( (?>[^()]+) | (?R) )* \)";
$str="(def a (x) (+ 1 x))(print (a 1))";
var_dump(preg_grep($pattern,$str));
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Output for 8.0.0 - 8.0.30 , 8.1.0 - 8.1.28 , 8.2.0 - 8.2.18 , 8.3.0 - 8.3.6 Fatal error: Uncaught TypeError: preg_grep(): Argument #2 ($array) must be of type array, string given in /in/Su6e3:9
Stack trace:
#0 /in/Su6e3(9): preg_grep('\\( ( (?>[^()]+)...', '(def a (x) (+ 1...')
#1 {main}
thrown in /in/Su6e3 on line 9
Process exited with code 255 . Output for 5.2.0 - 5.2.17 , 5.3.0 - 5.3.29 , 5.4.0 - 5.4.45 , 5.5.24 - 5.5.35 , 5.6.7 - 5.6.28 , 7.0.0 - 7.0.20 , 7.1.0 - 7.1.25 , 7.2.0 - 7.2.33 , 7.3.0 - 7.3.33 , 7.4.0 - 7.4.33 Warning: preg_grep() expects parameter 2 to be array, string given in /in/Su6e3 on line 9
NULL
Output for 4.3.11 , 4.4.0 - 4.4.9 , 5.0.0 - 5.0.5 , 5.1.0 - 5.1.6 Warning: preg_grep(): Second argument to preg_grep() should be an array in /in/Su6e3 on line 9
NULL
Output for 4.3.0 - 4.3.10 Warning: Second argument to preg_grep() should be an array in /in/Su6e3 on line 9
NULL
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254.49 ms | 401 KiB | 328 Q