<?php
$pattern="/\(((?>[^()]+)|(?R))*\)/";
$str = <<< LOL
(def a
(x) (+ 1 x))
(print (a 1))
(((((((((((((((((
)))))))))))))))))
LOL;
preg_match_all($pattern,$str,$out);
var_dump($out[0]);
- Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 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 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- array(3) {
[0]=>
string(21) "(def a
(x) (+ 1 x))"
[1]=>
string(13) "(print (a 1))"
[2]=>
string(35) "(((((((((((((((((
)))))))))))))))))"
}
preferences:
221.77 ms | 406 KiB | 340 Q