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HomeBackend DevelopmentPHP TutorialAnalysis of ideas for implementing multi-image upload with PHP and uploadify plug-in

This article mainly introduces the method of implementing multi-image upload in PHP. It analyzes the specific steps and related operating techniques of PHP combined with the uploadify plug-in to achieve multi-image upload. Friends in need can refer to it.

The details are as follows :

1. Existing pictures can be deleted
2.There is a new button
3.Click New Add a button to jump out of the frame
4. Implement asynchronous uploading of pictures in the frame and real-time effects
5. After the upload is successful, call the callback function
6. The pictures in the pop-up box can be deleted
7. Click Save in the frame pop-up box to display the image to the page through js
8. Click Save on the page to save the image data to the database

<?php 
foreach($info[&#39;product_img&#39;] 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[&#39;img&#39;];?>" name="product_img[]">
    <a onclick="" href="<?php echo $product_img[&#39;img&#39;];?>" target="_blank"><img  src="/static/imghwm/default1.png"  data-src="<?php echo $product_img[&#39;img&#39;];? alt="Analysis of ideas for implementing multi-image upload with PHP and uploadify plug-in" >"  class="lazy"  width="100"    style="max-width:90%" ></a>
    <br>
    <a href="javascript:void(0)" onclick="ClearPicArr2(this,&#39;<?php echo $product_img[&#39;img&#39;];?>&#39;)">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,&#39;&#39;,&#39;product&#39;,&#39;call_back2&#39;);"><img  src="/static/imghwm/default1.png"  data-src="<?php echo IMG_PATH? alt="Analysis of ideas for implementing multi-image upload with PHP and uploadify plug-in" >add-button.jpg"  class="lazy"   width="100"    style="max-width:90%" /></a>
  <br/>
  <a href="javascript:void(0)">  </a>
</p>

Comment: 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 = $(&#39;#pc_hash&#39;).val();
  var upurl =&#39;?m=admin&c=upload&a=upload&num=&#39;+num+&#39;&input=&#39;+elementid+&#39;&path=&#39;+path+&#39;&func=&#39;+callback+&#39;&pc_hash=&#39;+pc_hash;
  var iframe_str=&#39;<iframe frameborder="0" &#39;;
  iframe_str=iframe_str+&#39;id=uploadify &#39;;     
  iframe_str=iframe_str+&#39; src=&#39;+upurl;
  iframe_str=iframe_str+&#39; allowtransparency="true" class="uploadframe" scrolling="no"> &#39;;
  iframe_str=iframe_str+&#39;</iframe>&#39;;         
  $("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[&#39;func&#39;];
    $path = $_REQUEST[&#39;path&#39;] ? $_REQUEST[&#39;path&#39;] :&#39;temp&#39;;
    $info = array(
      &#39;num&#39;=> $_REQUEST[&#39;num&#39;],
      &#39;title&#39; => &#39;&#39;,     
      &#39;upload&#39; =>&#39;?m=admin&c=upload&a=imageUp&savepath=&#39;.$path.&#39;&pictitle=banner&dir=images&pc_hash=&#39;.$_SESSION[&#39;pc_hash&#39;],
      &#39;size&#39; => &#39;4M&#39;,
      &#39;type&#39; =>&#39;jpg,png,gif,jpeg&#39;,
      &#39;input&#39; => $_REQUEST[&#39;input&#39;],
      &#39;func&#39; => empty($func) ? &#39;undefined&#39; : $func,
    );
    include $this->admin_tpl(&#39;upload_upload&#39;);
}

<!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[&#39;title&#39;];?></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[&#39;num&#39;];?></strong>个附件,单文件最大<strong><?php echo $info[&#39;size&#39;];?></strong>,类型<strong><?php echo $info[&#39;type&#39;];?></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=&#39;text/javascript&#39; "+ "src=&#39;<?php echo PLUGIN_STATICS_PATH?>uploadify/jquery.uploadify.js?" + new Date()+ "&#39;></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(){
  $("iframe.uploadframe", window.parent.document).remove();
  //$(&#39;#uploadify&#39;).uploadifyClearQueue();
  //$(".fileWarp ul li").remove();
});
$(function() {
  $(&#39;#uploadify&#39;).uploadify({
      &#39;auto&#39;      : true,
      &#39;method&#39;     : &#39;post&#39;,
      &#39;multi&#39;      : true,
      &#39;swf&#39;       : &#39;<?php echo PLUGIN_STATICS_PATH?>uploadify/uploadify.swf&#39;,
      &#39;uploader&#39;    : &#39;<?php echo $info["upload"];?>&#39;,
      &#39;progressData&#39;  : &#39;all&#39;,
      &#39;queueSizeLimit&#39; : &#39;<?php echo $info["num"];?>&#39;,
      &#39;uploadLimit&#39;   : 5,
      &#39;fileSizeLimit&#39;  : &#39;20000KB&#39;,
      &#39;fileTypeDesc&#39;  : &#39;Image Files&#39;,
      &#39;fileTypeExts&#39;  : &#39;*.jpeg; *.jpg; *.png; *.gif&#39;,
      &#39;buttonImage&#39;   : &#39;<?php echo PLUGIN_STATICS_PATH?>uploadify/select.png&#39;,
      &#39;queueID&#39;     : &#39;fileQueue&#39;,
      &#39;onUploadStart&#39;  : function(file){
        $(&#39;#uploadify&#39;).uploadify(&#39;settings&#39;, &#39;formData&#39;, {&#39;iswatermark&#39;:$("#iswatermark").is(&#39;:checked&#39;)});        
      },
      &#39;onUploadSuccess&#39; : function(file, data, response){
        $(".fileWarp ul").append(SetImgContent(data));
        SetUploadFile();
      }
    });
});
function SetImgContent(data){  
  var obj=eval(&#39;(&#39;+data+&#39;)&#39;);
  if(obj.state == &#39;SUCCESS&#39;){
    var sLi = "";
    sLi += &#39;<li class="img">&#39;;
    sLi += &#39;<img  src="/static/imghwm/default1.png"  data-src="&#39; + obj.url + &#39;"  class="lazy"      style="max-width:90%"  style="max-width:90%" onerror="this.src=\&#39;<?php echo PLUGIN_STATICS_PATH? alt="Analysis of ideas for implementing multi-image upload with PHP and uploadify plug-in" >uploadify/nopic.png\&#39;">&#39;;
    sLi += &#39;<input type="hidden" name="fileurl_tmp[]" value="&#39; + obj.url + &#39;">&#39;;
    sLi += &#39;<a href="javascript:void(0);">删除</a>&#39;;
    sLi += &#39;</li>&#39;;
    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(
      &#39;?m=admin&c=upload&a=delupload&pc_hash=<?php echo $_SESSION["pc_hash"];?>&#39;,{action:"del", filename:$(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[&#39;func&#39;];?>";
  var num = "<?php echo $info[&#39;num&#39;];?>";
  var fileurl_tmp = [];
  if(callback != "undefined"){  
    if(num > 1){  
       $("input[name^=&#39;fileurl_tmp&#39;]").each(function(index,dom){
        fileurl_tmp[index] = dom.value;
       });  
    }else{
      fileurl_tmp = $("input[name^=&#39;fileurl_tmp&#39;]").val();  
    }
    eval(&#39;window.parent.&#39;+callback+&#39;(fileurl_tmp)&#39;);
    $(window.parent.document).find("iframe.uploadframe").remove();
    return;
  }          
  if(num > 1){
      var fileurl_tmp = "";
      $("input[name^=&#39;fileurl_tmp&#39;]").each(function(){
        fileurl_tmp += &#39;<li rel="&#39;+ this.value +&#39;"><input class="input-text" type="text" name="{$info.input}[]" value="&#39;+ this.value +&#39;" /><a href="javascript:void(0);" onclick="ClearPicArr(\&#39;&#39;+ this.value +&#39;\&#39;,\&#39;\&#39;)">删除</a></li>&#39;; 
      });     
      $(window.parent.document).find("#{$info.input}").append(fileurl_tmp);
  }else{
      $(window.parent.document).find("#{$info.input}").val($("input[name^=&#39;fileurl_tmp&#39;]").val());
  }
  $(window.parent.document).find("iframe.uploadframe").remove();
});
</script>
</body>
</html>

Comments: Call the uploadify plugin

$(function() {
  $(&#39;#uploadify&#39;).uploadify({
      &#39;auto&#39;      : true,
      &#39;method&#39;     : &#39;post&#39;,
      &#39;multi&#39;      : true,
      &#39;swf&#39;       : &#39;<?php echo PLUGIN_STATICS_PATH?>uploadify/uploadify.swf&#39;,
      &#39;uploader&#39;    : &#39;<?php echo $info["upload"];?>&#39;,
      &#39;progressData&#39;  : &#39;all&#39;,
      &#39;queueSizeLimit&#39; : &#39;<?php echo $info["num"];?>&#39;,
      &#39;uploadLimit&#39;   : 5,
      &#39;fileSizeLimit&#39;  : &#39;20000KB&#39;,
      &#39;fileTypeDesc&#39;  : &#39;Image Files&#39;,
      &#39;fileTypeExts&#39;  : &#39;*.jpeg; *.jpg; *.png; *.gif&#39;,
      &#39;buttonImage&#39;   : &#39;<?php echo PLUGIN_STATICS_PATH?>uploadify/select.png&#39;,
      &#39;queueID&#39;     : &#39;fileQueue&#39;,
      &#39;onUploadStart&#39;  : function(file){
        $(&#39;#uploadify&#39;).uploadify(&#39;settings&#39;, &#39;formData&#39;, {&#39;iswatermark&#39;:$("#iswatermark").is(&#39;:checked&#39;)});        
      },
      &#39;onUploadSuccess&#39; : 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[&#39;pictitle&#39;], ENT_QUOTES);
    // $path = htmlspecialchars($_REQUEST[&#39;dir&#39;], ENT_QUOTES);
    $savepath = htmlspecialchars($_REQUEST[&#39;savepath&#39;], ENT_QUOTES);
    $up = new think_upload();
    $path = &#39;./uploadfile/&#39;.$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[&#39;url&#39;] = $path.&#39;/&#39;.$name;
      $return_data[&#39;title&#39;] = $title;
      $return_data[&#39;state&#39;] = &#39;SUCCESS&#39;;
      exit(json_encode($return_data));
    } else {
      $return_data[&#39;state&#39;] = &#39;FAILURE&#39;;
      $return_data[&#39;msg&#39;]  = $up->getErrorMsg();
      exit(json_encode($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(&#39;jpg&#39;,&#39;gif&#39;,&#39;png&#39;); //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][&#39;name&#39;];
   $tmp_name = $_FILES[$fileField][&#39;tmp_name&#39;];
   $size = $_FILES[$fileField][&#39;size&#39;];
   $error = $_FILES[$fileField][&#39;error&#39;];
   /* 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() {
   $str = "上传文件<font color=&#39;red&#39;>{$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 $str.&#39;<br>&#39;;
  }
  /* 设置和$_FILES有关的内容 */
  private function setFiles($name="", $tmp_name="", $size=0, $error=0) {
   $this->setOption(&#39;errorNum&#39;, $error);
   if($error)
    return false;
   $this->setOption(&#39;originName&#39;, $name);
   $this->setOption(&#39;tmpFileName&#39;,$tmp_name);
   $aryStr = explode(".", $name);
   $this->setOption(&#39;fileType&#39;, strtolower($aryStr[count($aryStr)-1]));
   $this->setOption(&#39;fileSize&#39;, $size);
   return true;
  }
  /* 为单个成员属性设置值 */
  private function setOption($key, $val) {
   $this->$key = $val;
  }
  /* 设置上传后的文件名称 */
  private function setNewFileName() {
   if ($this->israndname) {
    $this->setOption(&#39;newFileName&#39;, $this->proRandName()); 
   } else{ 
    $this->setOption(&#39;newFileName&#39;, $this->originName);
   } 
  }
  /* 检查上传的文件是否是合法的类型 */
  private function checkFileType() {
   if (in_array(strtolower($this->fileType), $this->allowtype)) {
    return true;
   }else {
    $this->setOption(&#39;errorNum&#39;, -1);
    return false;
   }
  }
  /* 检查上传的文件是否是允许的大小 */
  private function checkFileSize() {
   if ($this->fileSize > $this->maxsize) {
    $this->setOption(&#39;errorNum&#39;, -2);
    return false;
   }else{
    return true;
   }
  }
  /* 检查是否有存放上传文件的目录 */
  private function checkFilePath() {
   if(empty($this->path)){
    $this->setOption(&#39;errorNum&#39;, -5);
    return false;
   }
   if (!file_exists($this->path) || !is_writable($this->path)) {
    if (!@mkdir($this->path, 0755)) {
     $this->setOption(&#39;errorNum&#39;, -4);
     return false;
    }
   }
   return true;
  }
  /* 设置随机文件名 */
  private function proRandName() {  
   $fileName = date(&#39;YmdHis&#39;)."_".rand(100,999);  
   return $fileName.&#39;.&#39;.$this->fileType; 
  }
  /* 复制上传文件到指定的位置 */
  private function copyFile() {
   if(!$this->errorNum) {
    $path = rtrim($this->path, &#39;/&#39;).&#39;/&#39;;
    $path .= $this->newFileName;
    if (@move_uploaded_file($this->tmpFileName, $path)) {
     return true;
    }else{
     $this->setOption(&#39;errorNum&#39;, -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[&#39;id&#39;]);
    $this->db->delete(array(&#39;id&#39;=>$id));
    // 遍历删除原图片
    $product_img = $this->product_img_db->select(array(&#39;product_id&#39;=>$id));
    foreach ($product_img as $k => $v) {
      unlink($v[&#39;img&#39;]);
    }
    // 删除表数据
    $this->product_img_db->delete(array(&#39;product_id&#39;=>$id));
    exit("1");
}

The above is the entire content of this article, I hope it will be helpful to everyone's study.


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