php壓縮檔案失敗是因為缺少相關程式碼語句,其解決辦法就是在程式碼檔案中新增「ob_clean();flush();」語句即可。
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PHP實現檔案下載功能,提示壓縮包損壞及打不開的解決方法
// 檔案下載 public static function downFile($id,$admin_id,$cid,$type) { $company = checkAdminCompany($admin_id,$cid); if (!$company) { return [ 'status' => -4, 'statusMsg' => '公司不存在' ]; } if ($type=='file') { // 判斷是否有許可權下載檔案 $checkFileRole = self::checkFileRole($admin_id,$cid,$id); if (!$checkFileRole) { return [ 'status' => 777, 'statusMsg' => '沒有操作許可權' ]; } $select_sql = "SELECT * FROM cloud_storage WHERE id in ($id)"; send_execute_sql($select_sql,$fileInfo); } elseif ($type == 'list') { // 判斷是否有許可權移動目錄下的檔案 $checkRole = self::checkRole($admin_id,$cid,$id); if (!$checkRole) { return [ 'status' => '777', 'statusMsg' => '沒有操作許可權' ]; } $select_sql = "SELECT * FROM cloud_storage WHERE list_id = $id"; send_execute_sql($select_sql,$fileInfo); } if (empty($fileInfo)) { return [ 'status' => -400, 'statusMsg' => '檔案不存在' ]; } foreach ($fileInfo as $key => $value) { $paths[$key] = $fileInfo[$key]['path']; } //這裡需要注意該目錄是否存在,並且有建立的許可權 $filename = 'logs/down/test.zip'; if(!file_exists($filename)){ $zip = new ZipArchive(); if ($zip->open($filename, ZipArchive::CREATE)==TRUE) { foreach( $paths as $val){ if(file_exists($val)){ $zip->addFile( $val, basename($val)); } } $zip->close(); } } if(!file_exists($filename)){ exit("無法找到檔案"); } header("Cache-Control: public"); header("Content-Description: File Transfer"); header('Content-disposition: attachment; filename='.basename($filename)); //檔名 header("Content-Type: application/zip"); //zip格式的 header("Content-Transfer-Encoding: binary"); //告訴瀏覽器,這是二進位制檔案 header('Content-Length: '. filesize($filename)); //告訴瀏覽器,檔案大小 ob_clean(); flush(); @readfile($filename); unlink($fileurl); exit; }
其實大多數的錯誤都是在缺少
ob_clean(); flush();
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