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本文实例讲述了PHP实现多图上传的方法。分享给大家供大家参考,具体如下:


1.已有图片可以删除
2.有一个新增的按钮
3.点击新增按钮,跳出frame框
4.在frame框中实现图片异步上传与及时效果
5.上传成功后,调用回调函数
6.弹出框中的图片可以进行删除
7.frame弹出框点击保存,把图片通过js展示到页面中
8.页面点击保存,把图片数据保存到数据库
<?php foreach($info["product_img"] as $product_img){?><div 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></div><?php}?><div 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></div>
点评:点击的时候,调用GetUploadify方法。
/* * 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();});}
点评:生成一个iframe框。
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><div class="W"><div class="Bg"></div><div class="Wrap" id="Wrap"><div class="Title"><h3 class="MainTit" id="MainTit"><?php echo $info["title"];?></h3><a href="javascript:Close();" title="关闭" class="Close"></a></div><div 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 $info["type"];?></strong></p><div class="flashWrap"><input name="uploadify" id="uploadify" type="file" multiple="true" /><!-- <span><input type="checkbox" name="iswatermark" id="iswatermark" /><label>是否添加水印</label></span>--></div><div class="fileWarp"><fieldset><legend>列表</legend><ul></ul><div id="fileQueue"></div></fieldset></div><div class="btnBox"><button class="btn" id="SaveBtn">保存</button> <button class="btn" id="CancelBtn">取消</button></div></div><!--[if IE 6]><iframe frameborder="0" style="width:100%;height:100px;background-color:transparent;position:absolute;top:0;left:0;z-index:-1;"></iframe><![endif]--></div></div><script src="<?php echo PLUGIN_STATICS_PATH?>uploadify/jquery.min.js" type="text/javascript"></script> <!--防止客户端缓存文件,造成uploadify.js不更新,而引起的“喔唷,崩溃啦”--><script>document.write("<script type="text/javascript" "+ "src="<?php echo PLUGIN_STATICS_PATH?>uploadify/jquery.uploadify.js?" + new Date()+ ""></s" + "cript>");</script><script src="<?php echo PLUGIN_STATICS_PATH?>uploadify/uploadify-move.js" type="text/javascript"></script> <script type="text/javascript">function Close(){$("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>
点评:调用uploadify插件
$(function() {$("#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();}});});
点评:表单提交图片文件到服务器,成功后调用回调函数。
/*** @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falseif($up -> upload("Filedata")) {$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));}}
点评:后台处理图片上传表单请求,返回图片路径
<?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{ $this->setOption("errorNum", -3); return false;} } else {return false; }}}
点评:php文件上传类。
然后处理好,图片数据删除对应的文件上传,减轻服务器空间压力。
public function delete() {$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");}
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希望本文所述对大家PHP程序设计有所帮助。