//查找快遞，$keyword輸入格式例如為【申通.快遞單號】,例如：申通.768422403144
    private function _checkExpress($keyword) 
    {
        include 'Kd_id.php';
        $str = explode('.', $keyword);   //按照要求截取字符串成一個數組，具有兩個字符串
        $order = $str[1];
        $id = $Kd_id[$str[0]];
        $apiurl = "http://www.aikuaidi.cn/rest/?key=ff4735a30a7a4e5a8637146fd0e7cec9&order={$order}&id={$id}&show=xml"; //api接口地址
        $trans = file_get_contents($apiurl);
        $data = simplexml_load_string($trans);
        $Kd_status = $arr_status[strval($data->Status)];  //strval函數將對象轉化為字符串

        foreach ($data->Data->Order as $a) {
            foreach ($a->Time as $b) {
                foreach ($a->Content as $c) {
                    $m.= "{$b}{$c}"."\n";
                }
            }
        }
        
        $contentStr = "你的快遞單號{$order}{$Kd_status}\n{$m}";
        return $contentStr;
    }

<?php
    $Kd_id = array(
            '京東'=>'jingdong',
            'Aramex'=>'aramex',
            'EMS'=>'ems',
            'FEDEX'=>'fedex',
            '申通'=>'shentong',
            '順豐'=>'shunfeng',
            '速爾'=>'suer',
            '天天'=>'tiantian',
            'UPS'=>'ups',
            '偉邦'=>'weibang',
            '微特派'=>'weitepai',
            '萬象'=>'wxwl',
            '信豐'=>'xfwl',
            '新邦'=>'xinbang',
            '圓通'=>'yuantong',
            '韻達'=>'yunda',
            '運通'=>'yuntong',
            '中通'=>'zhongtong',
            '宅急送'=>'zjs',
            '中鐵'=>'zhongtie',
            '中郵'=>'zhongyou',
            '中天萬運'=>'ztwy',
            '平安達'=>'pinganda',
            '全一'=>'quanyi',
            '全晨'=>'quanchen',
            '全日通'=>'quanritong',
            '如風達'=>'rufengda'
    );
    $arr_status = array(
            '0'=>'查詢出錯',
            '1'=>'暫無記錄',
            '2'=>'在途中',
            '3'=>'派送中',
            '4'=>'已簽收',
            '5'=>'拒收',
            '6'=>'疑難件',
            '7'=>'退回'            
    );

?>