strtotime
date_default_timezone_set('Asia/Tokyo');
$string = ', 11 5, 2016, 01:36 AM';
$pattern = '/.+?, *(\d{1,2}) *(\d{1,2}), *(\d{1,4}), *(.+)/i';
$replacement = '$3/$1/$2 $4';
$strdate = preg_replace($pattern, $replacement, $string);
echo strtotime($strdate);
?>