PHP上传文件

 1 <form action="" enctype="multipart/form-data" method="post">
 2     上传文件：<input type="file" name="upload"><br/>
 3     <input type="submit" value="提交">
 4 </form>
 5 <?php
 6     if(is_uploaded_file($_FILES['upload']['tmp_name'])) {
 7         $upload = $_FILES["upload"];
 8         $name = $upload["name"];//上传文件的文件名
 9         $types = $upload["type"];//上传文件的类型
10         $size = $upload["size"];//上传文件的大小
11         $tmp_name = $upload["tmp_name"];//上传文件的临时存放路径
12         if(!empty($name)){
13             $file_types = explode(".", $name);
14             $file_type = $file_types[count($file_types)-1];
15             if(strtolower($file_type)!="txt"){
16                 echo "不是txt文件，请重新上传!";
17             }
18             $savePath = "E:\wamp\www\test\upload";
19             $str = date('YMDhis');
20             $file_name = $str . '.' . $file_type;
21             if (! copy ($tmp_name, $savePath.'\'.$file_name)){
22                  echo("failed");
23             }
24             else{
25                 echo($savePath .'\'. $file_name);
26                 echo("success<br>");
27             }
28         }
29     }
30 ?>

PHP上传文件改进版：

 1 <?php
 2 if($_FILES["file"]["type"] == "image/gif" || $_FILES["file"]["type"] == "image/jpeg" || $_FILES["file"]["type"] == "image/pjpeg" && ($_FILES["file"]["size"]) < 20000){
 3     if($_FILES["file"]["error"] > 0){
 4         echo "Return Code:". $_FILES["file"]["error"];
 5     }else{
 6         echo "Upload:" . $_FILES["file"]["name"];
 7         echo "Type:" . $_FILES["file"]["type"];
 8         echo "Size:" . ($_FILES["file"]["size"]/1024) . "Kb";
 9         echo "Temp file" . $_FILES["file"]["tmp_name"];
10         if(file_exists("upload/".$_FILES["file"]["name"])){
11             echo $_FILES["file"]["name"] . "already exists.";
12         }else{
13             move_uploaded_file($_FILES["file"]["tmp_name"], "upload/".$_FILES["file"]["name"]);
14             echo "Stored in:" . "upload/" . $_FILES["file"]["name"];
15         }
16     }
17 }else{
18     echo "Invalid file";
19 }
20 ?>