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@ 2021-01-20T12:16:20Z

<?php

$strings = [
    'the(crow)bar',
    'foo()bar',
    'handlebar()',
    '()foofighters',
    '(foobar)',
    '()',
    'barfood',
    'barf(oo',
    'fooeybar)',
    ')foob(',
];

$result = [];
foreach ($strings as $string) {
    $result[$string] = preg_match('~\(([^)]+)\)~', $string, $match) ? $match[1] : '';
}
var_export($result);

Output
Performance
VLD
References
Branches

preg_match: documentation ( source)
var_export: documentation ( source)

preferences:dark modelive previewkey bindings

36.38 ms | 405 KiB | 5 Q