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<?php
 
$rx = '/\w+(\((?:[^()]++|(?1))*\))?/';
$s = 'xyz(text1,(text2,text3)),asd';
if (preg_match_all($rx, $s, $m)) {
	print_r($m[0]);
}

Success #stdin #stdout 0.01s 23872KB

stdin

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Standard input is empty

stdout

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Array
(
    [0] => xyz(text1,(text2,text3))
    [1] => asd
)

https://ideone.com/ihSPTP

language:

PHP (php 7.3.5)

created:

visibility:

public

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