3v4l.org

run code in 500+ PHP versions simultaneously
<?php $strings = [ 'Sunscreen 25g (200 Quantity)', 'Lubricant 100ml (50 Quantity)', 'WD-40 100ml (75 Quantity)', ]; var_export(preg_replace('~[^(]+\((\d+).*~', '$1', $strings));

preferences:
49.37 ms | 1242 KiB | 5 Q