Web上传文件的安全方式

Web上传文件的安全方式

1.简单的文件上传表单
    一个简单的文件上传表单通常包含一个HTML表单和 PHP脚本.
  HTML Form:        

<form enctype="multipart/form-data" action="uploader.php" method="POST"><input type="hidden" name="MAX_FILE_SIZE" value="1000000">Choose a file to upload:<input name="uploadedfile" type="file" /><br /><input type="Submit" value="Upload File"/></form>PHP Code:<?php$target_path="uploads/";$target_path=$target_path.basename($FILES($_FILES['uploadedfile']['name']));if(move_uploader_file($_FILES['uploadedfile']['name'])){echo "The file". basename($_FILES['uploadedfile']['name']). "has been uploaded";echo "There was an error uploading the file,please try again!";}?>