我尝试使用php强制图片jpg文件下载,我已经实现了以下代码:
HTML
<a href = "filedownload.php?src=uploads/myimage.jpg&download=true>download this file</a>
download.php
<?php
ob_start();
include_once 'functions.php';
if (isset($_GET['download']) && $_GET['download'] == 'true')
{
$src = sanitizeString($_GET['src']);
header('Content-Description: File Transfer');
header('Content-Type: image/jpeg');
header('Content-Disposition: attachment; filename='.basename($src));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: public');
header('Pragma: public');
}
?>
假设图像的完整路径是“www.example.com/smith/topic/uploads/myimage.jpg”,我收到了正确的图像名称,也出现了下载窗口,但图像已损坏大小为1KB,任何人都可以告诉我原因,非常感谢。
答案 0 :(得分:6)
这里是一个如何使用readfile函数的例子
<?php
$file = 'monkey.gif';
if (file_exists($file)) {
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.basename($file));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');
header('Content-Length: ' . filesize($file));
ob_clean();
flush();
readfile($file);
exit;
}
?>
答案 1 :(得分:1)
答案 2 :(得分:1)
尝试使用:
header("Content-Disposition: attachment; filename=\"".basename($fullPath)."\";" );