本文实例讲述了php通过修改header强制图片下载的方法。分享给大家供大家参考。具体实现方法如下：

function downloadFile($file){ $file_name = $file; $mime = "application/force-download"; header("Pragma: public"); // required header("Expires: 0"); // no cache header("Cache-Control: must-revalidate, post-check=0, pre-check=0"); header("Cache-Control: private",false); header("Content-Type: ".$mime); header("Content-Disposition: attachment; filename="".basename($file_name)."""); header("Content-Transfer-Encoding: binary"); header("Connection: close"); readfile($file_name); // push it out exit();}

希望本文所述对大家的php程序设计有所帮助。