我有一个PHP文件，可以上传像JPEG和PNG这样的图片到一个名为uploads的文件夹中，该文件夹存储在Apache服务器上，并且与PHP文件位于相同的位置。
我已经检查了HTML和PHP的代码，两者都似乎完全正常，但每当我尝试上传文件时，总是会收到错误消息并且文件不能上传。
如果有更多经验的人能够查看我的代码，并告诉我为什么它会以这种方式运行，那将非常感激。
以下是HTML表单：
我已经检查了HTML和PHP的代码，两者都似乎完全正常，但每当我尝试上传文件时，总是会收到错误消息并且文件不能上传。
如果有更多经验的人能够查看我的代码，并告诉我为什么它会以这种方式运行，那将非常感激。
以下是HTML表单：
<!--
To change this template, choose Tools | Templates
and open the template in the editor.
-->
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Upload Your File</title>
</head>
<body>
<?php
// put your code here
?>
<form enctype="multipart/form-data" method="post" action="fileHandler.php">
Select File:
<input name="uploaded_file" type="file"/><br/>
<input type="submit" value="Upload"/>
</form>
</body>
</html>
以下是当表单提交时执行的PHP文件：
<?php
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
* PHP file that uploads files and handles any errors that may occur
* when the file is being uploaded. Then places that file into the
* "uploads" directory. File cannot work is no "uploads" directory is created in the
* same directory as the function.
*/
$fileName = $_FILES["uploaded_file"]["name"];//the files name takes from the HTML form
$fileTmpLoc = $_FILES["uploaded_file"]["tmp_name"];//file in the PHP tmp folder
$fileType = $_FILES["uploaded_file"]["type"];//the type of file
$fileSize = $_FILES["uploaded_file"]["size"];//file size in bytes
$fileErrorMsg = $FILES["uploaded_file"]["error"];//0 for false and 1 for true
$target_path = "uploads/" . basename( $_FILES["uploaded_file"]["name"]);
echo "file name: $fileName </br> temp file location: $fileTmpLoc<br/> file type: $fileType<br/> file size: $fileSize<br/> file upload target: $target_path<br/> file error msg: $fileErrorMsg<br/>";
//START PHP Image Upload Error Handling---------------------------------------------------------------------------------------------------
if(!$fileTmpLoc)//no file was chosen ie file = null
{
echo "ERROR: Please select a file before clicking submit button.";
exit();
}
else
if(!$fileSize > 16777215)//if file is > 16MB (Max size of MEDIUMBLOB)
{
echo "ERROR: Your file was larger than 16 Megabytes";
unlink($fileTmpLoc);//remove the uploaded file from the PHP folder
exit();
}
else
if(!preg_match("/\.(gif|jpg|jpeg|png)$/i", $fileName))//this codition allows only the type of files listed to be uploaded
{
echo "ERROR: Your image was not .gif, .jpg, .jpeg or .png";
unlink($fileTmpLoc);//remove the uploaded file from the PHP temp folder
exit();
}
else
if($fileErrorMsg == 1)//if file uploaded error key = 1 ie is true
{
echo "ERROR: An error occured while processing the file. Please try again.";
exit();
}
//END PHP Image Upload Error Handling---------------------------------------------------------------------------------------------------------------------
//Place it into your "uploads" folder using the move_uploaded_file() function
$moveResult = move_uploaded_file($fileTmpLoc, $target_path);
//Check to make sure the result is true before continuing
if($moveResult != true)
{
echo "ERROR: File not uploaded. Please Try again.";
unlink($fileTmpLoc);//remove the uploaded file from the PHP temp folder
}
else
{
//Display to the page so you see what is happening
echo "The file named <strong>$fileName</strong> uploaded successfully.<br/><br/>";
echo "It is <strong>$fileSize</strong> bytes.<br/><br/>";
echo "It is a <strong>$fileType</strong> type of file.<br/><br/>";
echo "The Error Message output for this upload is: $fileErrorMsg";
}
?>