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<?php $s = "__('This is a (TEST) all of this i want') i dont want any of this; __(extract this)"; if (preg_match_all('~__(\(((?:[^()]++|(?1))*)\))~', $s, $matches)) { print_r($matches[2]); }
Output for 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
Array ( [0] => 'This is a (TEST) all of this i want' [1] => extract this )
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149.91 ms | 407 KiB | 5 Q