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                ### 瀏覽器下載文件 ```php /** * 封裝下載excel * User: mi * Date: 2020-10-12 */ public function head_upload($file_name) { $file_name = iconv("utf-8", "gbk//IGNORE", $file_name);; //中文表名轉碼 $file_dir = $_SERVER['DOCUMENT_ROOT']."/excel_template/"; //下載文件存放目錄 //檢查文件是否存在 if (!file_exists($file_dir . $file_name)) { header('HTTP/1.1 404 NOT FOUND'); } else { //以只讀和二進制模式打開文件 $file = fopen($file_dir . $file_name, "rb"); //告訴瀏覽器這是一個文件流格式的文件 Header("Content-type: application/octet-stream"); //請求范圍的度量單位 Header("Accept-Ranges: bytes"); //Content-Length是指定包含于請求或響應中數據的字節長度 Header("Accept-Length: " . filesize($file_dir . $file_name)); //用來告訴瀏覽器,文件是可以當做附件被下載,下載后的文件名稱為$file_name該變量的值。 Header("Content-Disposition: attachment; filename=" . $file_name); //讀取文件內容并直接輸出到瀏覽器 echo fread($file, filesize($file_dir . $file_name)); fclose($file); exit (); } } ```
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