php上传文件和下载文件
程序员文章站
2022-04-30 21:22:25
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单文件上传
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>
<body>
<form action="upload_file.php" method="post"
enctype="multipart/form-data">
<label for="file">Filename:</label>
<input type="file" name="file" id="file" />
<br />
<input type="submit" name="submit" value="Submit" />
</form>
<!-- 判断变量$_files是否为空 -->
<?php
if ($_FILES["file"]["error"] > 0)
{
echo "Error: " . $_FILES["file"]["error"] . "<br />";
}
else
{
echo "Upload: " . $_FILES["file"]["name"] . "<br />";
echo "Type: " . $_FILES["file"]["type"] . "<br />";
echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />";
echo "Stored in: " . $_FILES["file"]["tmp_name"];
}
?>
</body>
</html>
下载文件
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GBK" />
<title>Insert title here</title>
</head>
<body>
<a href="0gwc.txt">通过超链接0gwc.txt</a>
<br />
<a href="1.jpg">下载1.jpg</a>
<br />
<a href="doDownload1.php?filename=D:/WWW/0gwc.txt">通过程序下载1.jpg</a>
<br />
<a href="doDownload1.php?filename=../upload/nv.jpg">下载nv.jpg</a>
<?php
?>
</body>
</html>
<?php
$filename=$_GET['filename'];
echo $filename;
if($filename!=""){
header('content-disposition:attachment;filename='.basename($filename));
header('content-length:'.filesize($filename));
readfile($filename);
}
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