如何使用ajax php和jquery将多个图像上传到文件夹
[英]How to upload multiple images to a folder using ajax php and jquery
问题描述
I am trying to upload multiple images to a folder at a time by using AJAX, JQuery, and PHP. 
我正在尝试使用AJAX，JQuery和PHP一次将多个图像上传到一个文件夹。 The code is running for single file upload but not running for multiple image upload. 该代码仅用于单个文件上传，但不用于多个图像上传。 If I am uploading a single image without loop then its working fine but in case of loop it's not working. 如果我上载没有循环的单个图像，则可以正常工作，但如果循环，则无法正常工作。
I am using the following code. 我正在使用以下代码。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Upload Iamge</title>
<link href="style.css" rel="stylesheet" type="text/css">
<script src="jquery-1.12.0.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("#but_upload").click(function(){
var fd = new FormData();
//following code is working fine in for single image upload
// var files = $('#file')[0].files[0];
// fd.append('file',files);
//this code not working for multiple image upload
var names = [];
for (var i = 0; i < $('#file').get(0).files.length; ++i) {
names.push($('#file').get(0).files[i].name);
}
fd.append('file[]',names);
/*var ins = document.getElementById('file').files.length;
for (var x = 0; x <ins; x++) {
fd.append("file", document.getElementById('file').files[x]);
}*/
$.ajax({
url:'upload.php',
type:'post',
data:fd,
contentType: false,
processData: false,
success:function(response){
if(response != 0){
$("#img").attr("src",response);
}
},
error:function(response){
alert('error : ' + JSON.stringify(response));
}
});
});
});
</script>
</head>
//HTML Part
<body>
<div class="container">
<h1>AJAX File upload</h1>
<form method="post" action="" id="myform">
<div>
<img src="" id="img" width="100" height="100">
</div>
<div>
<input type="file" id="file" name="file" multiple="multiple" />
<input type="button" class="button" value="Upload"
id="but_upload">
</div>
</form>
</div>
</body>
</html>
//PHP Code
<?php
/* Getting file name */
echo "<script>alert('yes');</script>";
//without loop working fine
$count = count($_FILES['file']['name']);
for ($i = 0; $i < $count; $i++) {
$filename = $_FILES['file']['name'][$i];
/* Location */
$location = "upload/".$filename;
/* Upload file */
if(move_uploaded_file($_FILES['file']['tmp_name'],$location)){
echo $location;
} else {
echo 0;
}
}
?>
2 个解决方案
解决方案1
0 已采纳 2017-12-21 08:38:03
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Upload Iamge</title>
<script type="text/javascript">
$(document).ready(function(){
$("#but_upload").click(function(){
var fd = new FormData();
//following code is working fine in for single image upload
// var files = $('#file')[0].files[0];
// fd.append('file',files);
//this code not working for multiple image upload
var names = [];
var file_data = $('input[type="file"]')[0].files;
// for multiple files
for(var i = 0;i<file_data.length;i++){
fd.append("file_"+i, file_data[i]);
}
fd.append('file[]',names);
/*var ins = document.getElementById('file').files.length;
for (var x = 0; x <ins; x++) {
fd.append("file", document.getElementById('file').files[x]);
}*/
$.ajax({
url:'upload.php',
type:'post',
data:fd,
contentType: false,
processData: false,
success:function(response){
if(response != 0){
$("#img").attr("src",response);
}
},
error:function(response){
alert('error : ' + JSON.stringify(response));
}
});
});
});
</script>
</head>
//HTML Part
<body>
<div class="container">
<h1>AJAX File upload</h1>
<form method="post" action="" id="myform">
<div>
<img src="" id="img" width="100" height="100">
</div>
<div>
<input type="file" id="file" name="file" multiple="multiple" />
<input type="button" class="button" value="Upload"
id="but_upload">
</div>
</form>
</div>
</body>
</html>
have made changes in below code 在以下代码中进行了更改
var file_data = $('input[type="file"]')[0].files; // for multiple files
for(var i = 0;i<file_data.length;i++){
fd.append("file_"+i, file_data[i]);
}
fd.append('file[]',names);
And there are also changes in PHP code PHP代码也有变化
<?php
/* Getting file name */
//without loop working fine
$count = count($_FILES);
for ($i = 0; $i < $count; $i++) {
$filename = $_FILES['file_'.$i];
/* Location */
echo $location = "upload/".$filename['name'];
/* Upload file */
if(move_uploaded_file($filename['tmp_name'],$location)){
echo $location;
} else {
echo 0;
}
}
?>
count of files and file name are comming in a different way so I have made the changes as required instead of if gives file array like $_FILE['file_0'] , $_FILE['file_1'] and so on, I have also change the permission of upload directory please check if your directory have read and write permission (777) or not , this code works for me you can try I hope it will work for you also :-) 文件计数和文件名以不同的方式出现，因此我根据需要进行了更改，而不是是否给出文件数组，例如$_FILE['file_0'] ， $_FILE['file_1']等， 我也进行了更改上传目录的权限，请检查您的目录是否具有读写权限（777） ，此代码对我有效，您可以尝试，希望它也对您有效:-)
解决方案2
0 2017-12-21 08:42:39
在循环中，您需要添加特定文件的index
move_uploaded_file($_FILES['file']['tmp_name'][$i],$location); // $i is index
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