Only implement a small upload function without paying too much attention to the quality of the code
html
<html>
<head><title>test the php</title></head>
<body>
<h1> upload new file to website</h1>
<form action="test3.php" method="post" enctype="multipart/form-data">
<div>
<input type="hidden" name="MAX_SIZE" value="100000000"/>
<lable for="userfile" >upload a file :</lable>
<input type="file" name="userfile" id="userfile" />
<input type="submit" value="submit" />
</div>
</form>
</body>
</html><?php
if($_FILES['userfile']['error'] > 0)
{
echo "upload error"."</br>";
exit;
}
else
{
echo "upload ok"."</br>";
}
if(file_exists("/var/www/".$_FILES['userfile']['name']))
{
echo "file already exists"."</br>";
exit;
}
else
{
move_uploaded_file($_FILES['userfile']['tmp_name'], "/var/www/".$_FILES['userfile']['name']); //必须修改上传文件名，否则脚本退出会自动删除上传文件
echo "upload finished<br>";
}
?>Note: Parameter configuration related to upload in the php.ini file
file_uploads, upload_tmp_dir , upload_max_filesize, post_max_size
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The above introduces the PHP file upload function, including aspects of the content. I hope it will be helpful to friends who are interested in PHP tutorials.
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