<a href="/path/to/image"><img src="/path/to/image" /></a>在网页应用程序中。当我单击链接时，它会在新页面中显示图片。如果您想保存图片，那么您需要右键单击它并选择“另存为”。<a href="download.php?file=path/<?=$row['file_name']?>">Download</a>
download.php：
<?php
$file = $_GET['file'];
download_file($file);
function download_file( $fullPath ){
// Must be fresh start
if( headers_sent() )
die('Headers Sent');
// Required for some browsers
if(ini_get('zlib.output_compression'))
ini_set('zlib.output_compression', 'Off');
// File Exists?
if( file_exists($fullPath) ){
// Parse Info / Get Extension
$fsize = filesize($fullPath);
$path_parts = pathinfo($fullPath);
$ext = strtolower($path_parts["extension"]);
// Determine Content Type
switch ($ext) {
case "pdf": $ctype="application/pdf"; break;
case "exe": $ctype="application/octet-stream"; break;
case "zip": $ctype="application/zip"; break;
case "doc": $ctype="application/msword"; break;
case "xls": $ctype="application/vnd.ms-excel"; break;
case "ppt": $ctype="application/vnd.ms-powerpoint"; break;
case "gif": $ctype="image/gif"; break;
case "png": $ctype="image/png"; break;
case "jpeg":
case "jpg": $ctype="image/jpg"; break;
default: $ctype="application/force-download";
}
header("Pragma: public"); // required
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: private",false); // required for certain browsers
header("Content-Type: $ctype");
header("Content-Disposition: attachment; filename=\"".basename($fullPath)."\";" );
header("Content-Transfer-Encoding: binary");
header("Content-Length: ".$fsize);
ob_clean();
flush();
readfile( $fullPath );
} else
die('File Not Found');
}
?>
<a href="download.php?file=../dbparams.inc>">Download</a>。更多信息请参见这里：http://en.wikipedia.org/wiki/Directory_traversal_attack。 - OrganicPanda如果你使用HTML5，可以在链接中添加属性“download”。
<a href="/test.pdf" download>
不，不是这样。您需要在服务器上添加一个Content-Disposition头才能将文件设置为附件而非内联。不过，您可以使用纯Apache配置来实现此操作。
我找到了使用mod_rewrite进行操作的示例，尽管我知道存在更简单的方法。
试试这个...
<a href="/path/to/image" download>
<img src="/path/to/image" />
</a>
HTML下载属性用于指定当用户点击超链接时，目标将被下载。
只有在设置href属性时才会使用此属性。
属性的值将是要下载的文件名。允许的值没有限制，浏览器将自动检测正确的文件扩展名并将其添加到文件中（.img，.pdf，.txt，.html等）。
示例代码：
<a href="https://www.w3schools.com/images/myw3schoolsimage.jpg"> Download Image >></a>
HTML5：
<a href="https://www.w3schools.com/images/myw3schoolsimage.jpg" download> Download Image >></a>
输出:
Html5下载或Chrome
<html>
<head>
<title> Download-Button </title>
</head>
<body>
<p> Click the image ! You can download! </p>
<?php
$image = basename("http://localhost/sc/img/logo.png"); // you can here put the image path dynamically
//echo $image;
?>
<a download="<?php echo $image; ?>" href="http://localhost/sc/img/logo.png" title="Logo title">
<img alt="logo" src="http://localhost/sc/img/logo.png">
</a>
</body>
我写了这个简单的代码！：）
<html>
<head>
<title> Download-Button </title>
</head>
<body>
<p> Click the image ! You can download! </p>
<a download="logo.png" href="http://localhost/folder/img/logo.png" title="Logo title">
<img alt="logo" src="http://localhost/folder/img/logo.png">
</a>
</body>
</html>