2016-06-02

php简单文件上传和下载

demo

php简单实现文件上传和下载
当然实际应用中还是要检测文件大小呀，格式呀什么的…

1. html

index.php

<!doctype html>
<html lang="en">
 <head>
  <meta charset="utf-8">
  <meta name="Generator" content="EditPlus®">
  <meta name="Author" content="">
  <meta name="Keywords" content="">
  <meta name="Description" content="">
  <title>Document</title>
  <style>
		*{
			font-family:'';
		}
  </style>
 </head>
 <body>
	 <center>
		<h2>upload a file<h2>
		<form style='width:400px;height:400px;border:solid 5px red;border-radius:10px' enctype='multipart/form-data' method='post' action='upload.php'>
		<input type='file' name='file'>
		</br>
		<input type='submit' value='submit'>
		</br>
		</br>
		<form>
	 </center>
 </body>
</html>

2. upload

upload.php

<center>
<?php
header('content-type:text/html;charset=utf-8');
$file=$_FILES;
//echo '';
if(!is_uploaded_file($file['file']['tmp_name'])){
	echo 'please select a file ...';
}else{
	
	move_uploaded_file($file['file']['tmp_name'],$file['file']['name']);
	
	echo "<a href='download.php?a=".$file['file']['name']."'>".$file['file']['name']."</a>";
	
}
?>
</center>

3. download

download.php

<?php
//$filename="http://liaoxuefeng-static.oss-cn-hangzhou.aliyuncs.com/static-img/maiziedu.jpg";
$filename=$_GET["a"];
header('content-type:text/html;charset=utf-8');
header("Content-type: octet/stream");
header("content_type:application/octed-stream");
header('Content-Disposition: attachment; filename='.$filename);
ob_clean ();
readfile($filename);
?>