我正在尝试使用PHP脚本上传和保存图像，但图像没有保存在指定的文件夹中。请帮助
这是我的代码：
<?php
if(isset($_POST['button'])){
$name= "product_name.jpg";
move_uploaded_file($_FILES["fileField"]["tmp_name"],"student_images/$name");
header("location: tryupload.php");
}
?>
<html>
<body>
<form action="tryupload.php" enctype="multiple/form-data" name="myForm" id="myform" method="post">
<table>
<tr>
<td align="right">Product Image</td>
<td><label>
<input type="file" name="fileField" id="fileField" />
</label></td>
</tr>
<tr>
<td> </td>
<td><label>
<input type="submit" name="button" id="button"/>
</label></td>
</tr></table>
</form>
</body>
</html>
代码enctype="multiple/form-data"的这一部分是不正确的。
它需要读作enctype="multipart/form-data"。
还要确保你打算上传到的文件夹有适当的写入权限。
-
http://php.net/manual/en/features.file-upload.post-method.php
-
http://php.net/manual/en/function.chmod.php（设置文件夹/文件权限）。
上传安全相关链接：
-
https://security.stackexchange.com/questions/32852/risks-of-a-php-image-upload-form
-
100%安全的照片上传脚本
将错误报告添加到文件顶部，这将有助于查找错误。
<?php
error_reporting(E_ALL);
ini_set('display_errors', 1);
// rest of your code
旁注：错误报告只能在临时阶段进行，而不能在生产阶段进行。
要上传您可以拥有的多个文件。
多上传.php
<? session_start()?>
<!DOCTYPE html>
<html>
<head>
<title>Blank</title>
<!-------Including jQuery from google------>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="js/script.js"></script>
<!-------Including CSS File------>
<link rel="stylesheet" type="text/css" href="css/style.css">
<link rel="stylesheet" type="text/css" href="css/main.css">
<body>
<div id="formdiv">
<h1 class="uploadH2">Upload Your Artwork</h1>
<form enctype="multipart/form-data" action="" method="post">
Take a photo, upload your artwork, or choose an image from Facebook or Instagram
<label for="file">
<div id="image" style="margin-top:5%;">
<img src="img/camera.png">
</div>
</label>
<div id="filediv"><input name="file[]" type="file" id="file"/></div><br/>
<input type="button" class="add_more" id="add_more" value="Add More Files"/>
<input type="submit" value="Upload File" name="submit" id="img_upload" class="show-page-loading-msg" data-theme="b" data-textonly="false" data-textvisible="false" data-msgtext="" data-icon="arrow-r" data-iconpos="right"/>
</form>
<br/>
<br/>
<!-------Including PHP Script here------>
<?php include "uploadScript.php"; ?>
</div>
</body>
</html>
uploadScript.php
<?php
$dir_id = session_id(md5(uniqid()));
session_start($dir_id);
$path = "uploads/";
$dir = $path.$dir_id;
$path = $path.$dir_id."/";
if (file_exists($dir)) {
system('/bin/rm -rf ' . escapeshellarg($dir));
} else {
mkdir($path);
chmod($path, 0722);
}
$_SESSION["id"] = $dir_id;
$_SESSION["directory"] = "/" . $dir;
$_SESSION["path_name"] = $path;
?>
<?
if (isset($_POST['submit'])) {
$j = 0; //Variable for indexing uploaded image
$target_path = $path;
for ($i = 0; $i < count($_FILES['file']['name']); $i++) {//loop to get individual element from the array
$validextensions = array("jpeg", "jpg", "png", "gif"); //Extensions which are allowed
$ext = explode('.', basename($_FILES['file']['name'][$i]));//explode file name from dot(.)
$file_extension = end($ext); //store extensions in the variable
$target_path = $target_path . md5(uniqid()) . "." . $ext[count($ext) - 1];//set the target path with a new name of image
$j = $j + 1;//increment the number of uploaded images according to the files in array
if (($_FILES["file"]["size"][$i] < 100000) //Approx. 100kb files can be uploaded.
&& in_array($file_extension, $validextensions)) {
if (move_uploaded_file($_FILES['file']['tmp_name'][$i], $target_path)) {//if file moved to uploads folder
echo $j. ').<span id="noerror">Image uploaded successfully!.</span><br/><br/>';
} else {//if file was not moved.
echo $j. ').<span id="error">Only JPG, JPEG, PNG and GIF files types allowed.</span><br/><br/>';
}
} else {//if file size and file type was incorrect.
echo $j. ').<span id="error">***Invalid file Size or Type***</span><br/><br/>';
}
}
}
?>
此脚本只接受jpg、png、gif和jpeg。您不能上传或执行目录中的任何内容，除非您是所有者，并且文件大小不能超过10KB。
script.js
var abc = 0; //Declaring and defining global increement variable
$(document).ready(function() {
//To add new input file field dynamically, on click of "Add More Files" button below function will be executed
$('#add_more').click(function() {
$(this).before($("<div/>", {id: 'filediv'}).fadeIn('slow').append(
$("<input/>", {name: 'file[]', type: 'file', id: 'file'}),
$("<br/><br/>")
));
});
//following function will executes on change event of file input to select different file
$('body').on('change', '#file', function(){
if (this.files && this.files[0]) {
abc += 1; //increementing global variable by 1
var z = abc - 1;
var x = $(this).parent().find('#previewimg' + z).remove();
$(this).before("<div id='abcd"+ abc +"' class='abcd'><img id='previewimg" + abc + "' src='' style='width:40%; height:40%;'/></div>");
var reader = new FileReader();
reader.onload = imageIsLoaded;
reader.readAsDataURL(this.files[0]);
$(this).hide();
$("#abcd"+ abc).append($("<img/>", {id: 'delete', src: 'x.png', alt: 'delete'}).click(function() {
$(this).parent().parent().remove();
}));
}
});
//To preview image
function imageIsLoaded(e) {
$('#previewimg' + abc).attr('src', e.target.result);
};
$('#upload').click(function(e) {
var name = $(":file").val();
if (!name)
{
alert("First Image Must Be Selected");
e.preventDefault();
}
else {}
});
});
这将上传多个文件，在与上传表单相同的页面上预览图像，这将在服务器内部/上传一个目录，该目录与用户session_id（）匹配。如果该目录存在，则该目录将被删除，如果不存在，则将创建该目录。然后，这些文件将被上传到服务器上的那个目录中。
表单的enctype不正确。请使用"multiple/form-data"而不是"multipart/form-data"。