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<?php $strings = [ 'Sunscreen 25g (200 Quantity)', 'Lubricant 100ml (50 Quantity)', 'WD-40 100ml (75 Quantity)', ]; foreach ($strings as $string) { echo (preg_match('~\(\K\d+~', $string, $match) ? $match[0] : 'no quantity') . "\n"; }

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23.61 ms | 404 KiB | 5 Q