The example in this article describes the method of uploading multiple images in PHP. Share it with everyone for your reference, the details are as follows: 
1. Existing pictures can be deleted
2.Yes A new button
3. Click the new button to jump out of the frame
4. Asynchronous upload of pictures and timely effects in the frame
5.Upload successful Afterwards, call the callback function
6. The picture in the pop-up box can be deleted
7. Click Save in the frame pop-up box and display the picture to the page through js
8 .Click Save on the page to save the image data to the database
<?php
foreach($info['product_img'] as $product_img)
{
?>
<p style="width:100px; text-align:center; margin: 5px; display:inline-block;" class="goods_xc">
<input type="hidden" value="<?php echo $product_img['img'];?>" name="product_img[]">
<a onclick="" href="<?php echo $product_img['img'];?>" target="_blank"><img width="100" height="100" src="<?php echo $product_img['img'];?>"></a>
<br>
<a href="javascript:void(0)" onclick="ClearPicArr2(this,'<?php echo $product_img['img'];?>')">删除</a>
</p>
<?php
}
?>
<p class="goods_xc" style="width:100px; text-align:center; margin: 5px; display:inline-block;">
<input type="hidden" name="product_img[]" />
<a href="javascript:void(0);" onclick="GetUploadify(10,'','product','call_back2');">
<img src="<?php echo IMG_PATH?>add-button.jpg" width="100" height="100" /></a>
<br/>
<a href="javascript:void(0)"> </a>
</p>
Comments: When clicked, the GetUploadify method is called.
/*
* 上传图片 后台专用
* @access public
* @null int 一次上传图片张图
* @elementid string 上传成功后返回路径插入指定ID元素内
* @path string 指定上传保存文件夹,默认存在Public/upload/temp/目录
* @callback string 回调函数(单张图片返回保存路径字符串，多张则为路径数组 )
*/
function GetUploadify(num,elementid,path,callback)
{
var pc_hash = $('#pc_hash').val();
var upurl ='?m=admin&c=upload&a=upload&num='+num+'&input='+elementid+'&path='+path+'&func='+callback+'&pc_hash='+pc_hash;
var iframe_str='<iframe frameborder="0" ';
iframe_str=iframe_str+'id=uploadify ';
iframe_str=iframe_str+' src='+upurl;
iframe_str=iframe_str+' allowtransparency="true" class="uploadframe" scrolling="no"> ';
iframe_str=iframe_str+'</iframe>';
$("body").append(iframe_str);
$("iframe.uploadframe").css("height",$(document).height()).css("width","100%").css("position","absolute").css("left","0px").css("top","0px")
.css("z-index","999999").show();
$(window).resize(function(){
$("iframe.uploadframe").css("height",$(document).height()).show();
});
}
Comments: Generate an iframe box.
public function upload(){
$func = $_REQUEST['func'];
$path = $_REQUEST['path'] ? $_REQUEST['path'] :'temp';
$info = array(
'num'=> $_REQUEST['num'],
'title' => '',
'upload' =>'?m=admin&c=upload&a=imageUp&savepath='.$path.'&pictitle=banner&dir=images&pc_hash='.$_SESSION['pc_hash'],
'size' => '4M',
'type' =>'jpg,png,gif,jpeg',
'input' => $_REQUEST['input'],
'func' => empty($func) ? 'undefined' : $func,
);
include $this->admin_tpl('upload_upload');
}<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Uploadify</title>
<link rel="stylesheet" type="text/css" href="<?php echo PLUGIN_STATICS_PATH?>uploadify/uploadify.css" />
</head>
<body>
<p class="W">
<p class="Bg"></p>
<p class="Wrap" id="Wrap">
<p class="Title">
<h3 class="MainTit" id="MainTit"><?php echo $info['title'];?></h3>
<a href="javascript:Close();" title="关闭" class="Close"></a>
</p>
<p class="Cont">
<p class="Note">最多上传<strong><?php echo $info['num'];?></strong>个附件,单文件最大<strong><?php echo $info['size'];?></strong>,类型<strong>
<?php echo $info['type'];?></strong></p>
<p class="flashWrap">
<input name="uploadify" id="uploadify" type="file" multiple="true" />
<!-- <span><input type="checkbox" name="iswatermark" id="iswatermark" /><label>是否添加水印</label></span>-->
</p>
<p class="fileWarp">
<fieldset>
<legend>列表</legend>
<ul>
</ul>
<p id="fileQueue">
</p>
</fieldset>
</p>
<p class="btnBox">
<button class="btn" id="SaveBtn">保存</button>
<button class="btn" id="CancelBtn">取消</button>
</p>
</p>
<!--[if IE 6]>
<iframe frameborder="0" style="width:100%;height:100px;background-color:transparent;position:absolute;top:0;left:0;z-index:-1;"></iframe>
<![endif]-->
</p>
</p>
<script src="<?php echo PLUGIN_STATICS_PATH?>uploadify/jquery.min.js" type="text/javascript"></script>
<!--防止客户端缓存文件，造成uploadify.js不更新，而引起的“喔唷，崩溃啦”-->
<script>
document.write("<script type='text/javascript' "+ "src='<?php echo PLUGIN_STATICS_PATH?>uploadify/jquery.uploadify.js?" + new Date()+ "'></s" + "cript>");
</script>
<script src="<?php echo PLUGIN_STATICS_PATH?>uploadify/uploadify-move.js" type="text/javascript"></script>
<script type="text/javascript">
function Close(){
$("iframe.uploadframe", window.parent.document).remove();
}
$("#CancelBtn").click(function(){
$("iframe.uploadframe", window.parent.document).remove();
//$('#uploadify').uploadifyClearQueue();
//$(".fileWarp ul li").remove();
});
$(function() {
$('#uploadify').uploadify({
'auto' : true,
'method' : 'post',
'multi' : true,
'swf' : '<?php echo PLUGIN_STATICS_PATH?>uploadify/uploadify.swf',
'uploader' : '<?php echo $info["upload"];?>',
'progressData' : 'all',
'queueSizeLimit' : '<?php echo $info["num"];?>',
'uploadLimit' : 5,
'fileSizeLimit' : '20000KB',
'fileTypeDesc' : 'Image Files',
'fileTypeExts' : '*.jpeg; *.jpg; *.png; *.gif',
'buttonImage' : '<?php echo PLUGIN_STATICS_PATH?>uploadify/select.png',
'queueID' : 'fileQueue',
'onUploadStart' : function(file){
$('#uploadify').uploadify('settings', 'formData', {'iswatermark':$("#iswatermark").is(':checked')});
},
'onUploadSuccess' : function(file, data, response){
$(".fileWarp ul").append(SetImgContent(data));
SetUploadFile();
}
});
});
function SetImgContent(data){
var obj=eval('('+data+')');
if(obj.state == 'SUCCESS'){
var sLi = "";
sLi += '<li class="img">';
sLi += '<img src="' + obj.url + '" width="100" height="100" onerror="this.src=\'<?php echo PLUGIN_STATICS_PATH?>uploadify/nopic.png\'">';
sLi += '<input type="hidden" name="fileurl_tmp[]" value="' + obj.url + '">';
sLi += '<a href="javascript:void(0);">删除</a>';
sLi += '</li>';
return sLi;
}else{
//window.parent.message(obj.text,8,2);
alert(obj.msg);
return;
}
}
function SetUploadFile(){
$("ul li").each(function(l_i){
$(this).attr("id", "li_" + l_i);
})
$("ul li a").each(function(a_i){
$(this).attr("rel", "li_" + a_i);
}).click(function(){
$.get(
'?m=admin&c=upload&a=delupload&pc_hash=<?php echo $_SESSION["pc_hash"];?>',{action:"del", filename:$(this).prev().val()},function(){}
);
$("#" + this.rel).remove();
})
}
/*点击保存按钮时
*判断允许上传数，检测是单一文件上传还是组文件上传
*如果是单一文件，上传结束后将地址存入$input元素
*如果是组文件上传，则创建input样式，添加到$input后面
*隐藏父框架，清空列队，移除已上传文件样式*/
$("#SaveBtn").click(function(){
var callback = "<?php echo $info['func'];?>";
var num = "<?php echo $info['num'];?>";
var fileurl_tmp = [];
if(callback != "undefined"){
if(num > 1){
$("input[name^='fileurl_tmp']").each(function(index,dom){
fileurl_tmp[index] = dom.value;
});
}else{
fileurl_tmp = $("input[name^='fileurl_tmp']").val();
}
eval('window.parent.'+callback+'(fileurl_tmp)');
$(window.parent.document).find("iframe.uploadframe").remove();
return;
}
if(num > 1){
var fileurl_tmp = "";
$("input[name^='fileurl_tmp']").each(function(){
fileurl_tmp += '<li rel="'+ this.value +'"><input class="input-text" type="text" name="{$info.input}[]" value="'+ this.value +'" />
<a href="javascript:void(0);" onclick="ClearPicArr(\''+ this.value +'\',\'\')">删除</a></li>';
});
$(window.parent.document).find("#{$info.input}").append(fileurl_tmp);
}else{
$(window.parent.document).find("#{$info.input}").val($("input[name^='fileurl_tmp']").val());
}
$(window.parent.document).find("iframe.uploadframe").remove();
});
</script>
</body>
</html>
Comments: Call the uploadify plugin
$(function() {
$('#uploadify').uploadify({
'auto' : true,
'method' : 'post',
'multi' : true,
'swf' : '<?php echo PLUGIN_STATICS_PATH?>uploadify/uploadify.swf',
'uploader' : '<?php echo $info["upload"];?>',
'progressData' : 'all',
'queueSizeLimit' : '<?php echo $info["num"];?>',
'uploadLimit' : 5,
'fileSizeLimit' : '20000KB',
'fileTypeDesc' : 'Image Files',
'fileTypeExts' : '*.jpeg; *.jpg; *.png; *.gif',
'buttonImage' : '<?php echo PLUGIN_STATICS_PATH?>uploadify/select.png',
'queueID' : 'fileQueue',
'onUploadStart' : function(file){
$('#uploadify').uploadify('settings', 'formData', {'iswatermark':$("#iswatermark").is(':checked')});
},
'onUploadSuccess' : function(file, data, response){
$(".fileWarp ul").append(SetImgContent(data));
SetUploadFile();
}
});
});
Comment: The form submits the image file to the server, and calls the callback function after success.
/**
* @function imageUp
*/
public function imageUp()
{
// 有文件传入，现在要做的就是把它保存起来
// 处理上传并返回数据
// 上传图片框中的描述表单名称，
$title = htmlspecialchars($_REQUEST['pictitle'], ENT_QUOTES);
// $path = htmlspecialchars($_REQUEST['dir'], ENT_QUOTES);
$savepath = htmlspecialchars($_REQUEST['savepath'], ENT_QUOTES);
$up = new think_upload();
$path = './uploadfile/'.$savepath;
//设置属性(上传的位置， 大小， 类型， 名是是否要随机生成)
$up -> set("path", $path);
$up -> set("maxsize", 2000000);
$up -> set("allowtype", array("gif", "png", "jpg","jpeg"));
$up -> set("israndname", true);
//使用对象中的upload方法， 就可以上传文件， 方法需要传一个上传表单的名子 pic, 如果成功返回true, 失败返回false
if($up -> upload("Filedata")) {
$name = $up->getFileName();
$return_data['url'] = $path.'/'.$name;
$return_data['title'] = $title;
$return_data['state'] = 'SUCCESS';
exit(json_encode($return_data));
} else {
$return_data['state'] = 'FAILURE';
$return_data['msg'] = $up->getErrorMsg();
exit(json_encode($return_data));
}
}
Comments: The background processes the image upload form request and returns the image path
<?php
/**
* file: fileupload.class.php 文件上传类FileUpload
* 本类的实例对象用于处理上传文件，可以上传一个文件，也可同时处理多个文件上传
*/
class think_upload {
private $path = "./uploadfile"; //上传文件保存的路径
private $allowtype = array('jpg','gif','png'); //设置限制上传文件的类型
private $maxsize = 1000000; //限制文件上传大小（字节）
private $israndname = true; //设置是否随机重命名文件， false不随机
private $originName; //源文件名
private $tmpFileName; //临时文件名
private $fileType; //文件类型(文件后缀)
private $fileSize; //文件大小
private $newFileName; //新文件名
private $errorNum = 0; //错误号
private $errorMess=""; //错误报告消息
/**
* 用于设置成员属性（$path, $allowtype,$maxsize, $israndname）
* 可以通过连贯操作一次设置多个属性值
*@param string $key 成员属性名(不区分大小写)
*@param mixed $val 为成员属性设置的值
*@return object 返回自己对象$this，可以用于连贯操作
*/
function set($key, $val){
$key = strtolower($key);
if( array_key_exists( $key, get_class_vars(get_class($this) ) ) ){
$this->setOption($key, $val);
}
return $this;
}
/**
* 调用该方法上传文件
* @param string $fileFile 上传文件的表单名称
* @return bool 如果上传成功返回数true
*/
function upload($fileField) {
$return = true;
/* 检查文件路径是滞合法 */
if( !$this->checkFilePath() ) {
$this->errorMess = $this->getError();
return false;
}
/* 将文件上传的信息取出赋给变量 */
$name = $_FILES[$fileField]['name'];
$tmp_name = $_FILES[$fileField]['tmp_name'];
$size = $_FILES[$fileField]['size'];
$error = $_FILES[$fileField]['error'];
/* 如果是多个文件上传则$file["name"]会是一个数组 */
if(is_Array($name)){
$errors=array();
/*多个文件上传则循环处理 ， 这个循环只有检查上传文件的作用，并没有真正上传 */
for($i = 0; $i < count($name); $i++){
/*设置文件信息 */
if($this->setFiles($name[$i],$tmp_name[$i],$size[$i],$error[$i] )) {
if(!$this->checkFileSize() || !$this->checkFileType()){
$errors[] = $this->getError();
$return=false;
}
}else{
$errors[] = $this->getError();
$return=false;
}
/* 如果有问题，则重新初使化属性 */
if(!$return)
$this->setFiles();
}
if($return){
/* 存放所有上传后文件名的变量数组 */
$fileNames = array();
/* 如果上传的多个文件都是合法的，则通过销魂循环向服务器上传文件 */
for($i = 0; $i < count($name); $i++){
if($this->setFiles($name[$i], $tmp_name[$i], $size[$i], $error[$i] )) {
$this->setNewFileName();
if(!$this->copyFile()){
$errors[] = $this->getError();
$return = false;
}
$fileNames[] = $this->newFileName;
}
}
$this->newFileName = $fileNames;
}
$this->errorMess = $errors;
return $return;
/*上传单个文件处理方法*/
} else {
/* 设置文件信息 */
if($this->setFiles($name,$tmp_name,$size,$error)) {
/* 上传之前先检查一下大小和类型 */
if($this->checkFileSize() && $this->checkFileType()){
/* 为上传文件设置新文件名 */
$this->setNewFileName();
/* 上传文件 返回0为成功， 小于0都为错误 */
if($this->copyFile()){
return true;
}else{
$return=false;
}
}else{
$return=false;
}
} else {
$return=false;
}
//如果$return为false, 则出错，将错误信息保存在属性errorMess中
if(!$return)
$this->errorMess=$this->getError();
return $return;
}
}
/**
* 获取上传后的文件名称
* @param void 没有参数
* @return string 上传后，新文件的名称， 如果是多文件上传返回数组
*/
public function getFileName(){
return $this->newFileName;
}
/**
* 上传失败后，调用该方法则返回，上传出错信息
* @param void 没有参数
* @return string 返回上传文件出错的信息报告，如果是多文件上传返回数组
*/
public function getErrorMsg(){
return $this->errorMess;
}
/* 设置上传出错信息 */
private function getError() {
$str = "上传文件<font color='red'>{$this->originName}</font>时出错 : ";
switch ($this->errorNum) {
case 4: $str .= "没有文件被上传"; break;
case 3: $str .= "文件只有部分被上传"; break;
case 2: $str .= "上传文件的大小超过了HTML表单中MAX_FILE_SIZE选项指定的值"; break;
case 1: $str .= "上传的文件超过了php.ini中upload_max_filesize选项限制的值"; break;
case -1: $str .= "未允许类型"; break;
case -2: $str .= "文件过大,上传的文件不能超过{$this->maxsize}个字节"; break;
case -3: $str .= "上传失败"; break;
case -4: $str .= "建立存放上传文件目录失败，请重新指定上传目录"; break;
case -5: $str .= "必须指定上传文件的路径"; break;
default: $str .= "未知错误";
}
return $str.'<br>';
}
/* 设置和$_FILES有关的内容 */
private function setFiles($name="", $tmp_name="", $size=0, $error=0) {
$this->setOption('errorNum', $error);
if($error)
return false;
$this->setOption('originName', $name);
$this->setOption('tmpFileName',$tmp_name);
$aryStr = explode(".", $name);
$this->setOption('fileType', strtolower($aryStr[count($aryStr)-1]));
$this->setOption('fileSize', $size);
return true;
}
/* 为单个成员属性设置值 */
private function setOption($key, $val) {
$this->$key = $val;
}
/* 设置上传后的文件名称 */
private function setNewFileName() {
if ($this->israndname) {
$this->setOption('newFileName', $this->proRandName());
} else{
$this->setOption('newFileName', $this->originName);
}
}
/* 检查上传的文件是否是合法的类型 */
private function checkFileType() {
if (in_array(strtolower($this->fileType), $this->allowtype)) {
return true;
}else {
$this->setOption('errorNum', -1);
return false;
}
}
/* 检查上传的文件是否是允许的大小 */
private function checkFileSize() {
if ($this->fileSize > $this->maxsize) {
$this->setOption('errorNum', -2);
return false;
}else{
return true;
}
}
/* 检查是否有存放上传文件的目录 */
private function checkFilePath() {
if(empty($this->path)){
$this->setOption('errorNum', -5);
return false;
}
if (!file_exists($this->path) || !is_writable($this->path)) {
if (!@mkdir($this->path, 0755)) {
$this->setOption('errorNum', -4);
return false;
}
}
return true;
}
/* 设置随机文件名 */
private function proRandName() {
$fileName = date('YmdHis')."_".rand(100,999);
return $fileName.'.'.$this->fileType;
}
/* 复制上传文件到指定的位置 */
private function copyFile() {
if(!$this->errorNum) {
$path = rtrim($this->path, '/').'/';
$path .= $this->newFileName;
if (@move_uploaded_file($this->tmpFileName, $path)) {
return true;
}else{
$this->setOption('errorNum', -3);
return false;
}
} else {
return false;
}
}
}
Comment: PHP file upload class.
Then process it, delete the image data and upload the corresponding files to reduce the pressure on the server space.
public function delete() {
$id = intval($_GET['id']);
$this->db->delete(array('id'=>$id));
// 遍历删除原图片
$product_img = $this->product_img_db->select(array('product_id'=>$id));
foreach ($product_img as $k => $v) {
unlink($v['img']);
}
// 删除表数据
$this->product_img_db->delete(array('product_id'=>$id));
exit("1");
} The above is the content of the analysis of ideas for PHP to implement multi-image upload (combined with the uploadify plug-in). For more related content, please pay attention to the PHP Chinese website (www.php.cn)!
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