Size: a a a
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$pattern = '/\(*\)/';
$str = '5 * (4 - 2)';
echo preg_match($pattern, $str) ? 'true' : 'false';
RD
SS
( { [
g
$pattern = '/\(*\)/';
$str = '5 * (4 - 2)';
echo preg_match($pattern, $str) ? 'true' : 'false';
RD
( { [
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