php时间字符串（导零）格式化

function time_formatting($time=''){
    if(preg_match("/^([0-9]{1,2}):([0-9]{1,2})$/", $time)) {
        list($hour, $minute) = explode(":", $time);

        if($hour > 23 || $minute >59) return ['code' => 1,'msg' => LG('Incorrect time format')];

        if ($hour < 10 && strlen($hour) == 1) {
            $hour = '0' . $hour; // 添加前导零
        }
        if ($minute < 10 && strlen($minute) == 1) {
            $minute = '0' . $minute; // 添加前导零
        }
        $fullTime = date('H:i', strtotime(date('Y-m-d') . ' ' . $hour . ':' . $minute));
        return ['code' => 0,'msg' => '成功','time' => $fullTime];
    }
    return ['code' => 1,'msg' => '失败'];
}