在php中使用jquery uploadify进行多图片上传

jquery uploadify是一款Ajax风格的批量图片上传插件，在PHP中使用jquery uploadify很方便，请按照本文介绍的方法和步骤，为你的PHP程序增加jquery uploadify插件的批量上传图片功能。

本文是以dilicms为基础，为其增加图片上传功能。

1.增加数据表dili_fieldtypes新字段：k=>image,V=>图片上传区域（VACHAR）；

2.修改application/libraries/dili/Field_behavior.php，在switch中增加如下代码：

case 'image':
$field=array(
'type'=>'VARCHAR',
'constraint'=>255,
'default'=>' '
);
break;

3. 修改 application/libraries/dili/Form.php 并且增加如下代码：

function _image($fileld,$default){
//$type= 'type=hidden';
//$width=($field['width'] ? $field['width'] : '570') .'px;';
//$height=($field['height'] ? $field['height'] : '415')  .'px;';
return ;
}

4.在content_form.php和category_content_form.php中增加判断代码：

<?php
    if($v['type']=="image"):
?>
<div id="fileQueue"></div>
<input type="file" id="uploadify" name="Filedata" />
<div>
<a href="javascript('#uploadify').uploadify('upload','*')">上传</a>
<a href="javascript('#uploadify').uploadify('cancel')">取消上传</a>
</div>
<input type="text" style="" name="<?php echo $v['name']?>" id="<?php echo $v['name']."_id"?>" value=""/>
<input type="hidden" style="" name="poster" id="<?php echo $v['name']."_id_1"?>" value=""/>
<link href="<?php echo $this->config->item("base_url");?>asset/js/uploadify/uploadify.css" type="text/css" rel="stylesheet" />
<script type="text/javascript" src="<?php echo $this->config->item("base_url");?>asset/js/uploadify/jquery.uploadify-3.1.min.js"></script>
<script type="text/javascript">
$(document).ready(function()
{
        $("#uploadify").uploadify({
                'debug':false,
                'swf': '<?php echo $this->config->item("base_url");?>asset/js/uploadify/uploadify.swf',
                'uploader': '<?php echo $this->config->item("base_url");?>photo/savephoto',
                'method':"post",
                'height':30,
                'width':120,
                'queueID': 'fileQueue',
                'auto': false,
                'multi': false,
                'fileTypeDesc':'只允许上传jpg格式图片',
                'fileTypeExt':'*.jpg',
                'fileSizeLimit' : '10MB',
                   'formData' : { '<?php echo session_name();?>' : '<?php echo $this->session->userdata('session_id');?>' },
                'onUploadError'     : function (file,errorCode,errorMsg,errorString) {
      alert('The file ' + file.name + ' could not be uploaded: ' + errorString);
    },
    'onUploadSuccess':function(file,data,response){
            alert(data);
            $("#<?php echo $v['name']."_id"?>").val(data);
            $("#<?php echo $v['name']."_id_1"?>").val(data);
        }
    });
})
</script>
<?php endif;?>

6. 新建photo.php文件:

<?php
if ( ! defined('BASEPATH')) exit('No direct script access allowed');
date_default_timezone_set('Asia/Shanghai');
class Photo extends Front_Controller{
        public function __construct()
        {
                parent::__construct();
        }
                function _getFilePath()
        {
                $path="attachments/".date("Y")."/";
            if(!file_exists($path)){
                    mkdir($path,'777');
            }
            $path.=date("m")."/";
            if(!file_exists($path)){
                    mkdir($path,'777');
            }
            return $path;
        }
        function _creat_photothumbs($FileName,$setW){
                $IMGInfo= getimagesize($FileName);
        if(!$IMGInfo) return false;
        if($IMGInfo['mime']== "image/pjpeg" || $IMGInfo['mime']=="image/jpeg"){
            $ThisPhoto= imagecreatefromjpeg($FileName);
        }elseif($IMGInfo['mime']== "image/x-png" || $IMGInfo['mime']== "image/png"){
            $ThisPhoto= imagecreatefrompng($FileName);
        }elseif($IMGInfo['mime']== "image/gif"){
            $ThisPhoto=imagecreatefromgif($FileName);
        }
        $width=$IMGInfo['0'];
        $height=$IMGInfo['1'];
        $scale=$height/$width;
        $nw=$setW;
        $nh=$nw*$scale;
        $NewPhoto=imagecreatetruecolor($nw,$nh);
        imagecopyresampled($NewPhoto,$ThisPhoto,0,0,0,0,$nw,$nh,$width,$height);
        ImageJpeg ($NewPhoto,$FileName);
        return true;
        }
                function _savephoto_post(){
                                        $dest_dir =$this->_getFilePath();
                        if (!empty($_FILES)) {
                        $date = date('Ymd');
                        //$dest_dir =$this->_getFilePath();
                        $photoname = $_FILES["Filedata"]['name'];
                        $phototype = $_FILES['Filedata']['type'];
                        $photosize = $_FILES['Filedata']['size'];
                        $fileInfo=pathinfo($photoname);
                        $extension=$fileInfo['extension'];
                        $newphotoname = date("YmdHis").mt_rand(10000,99999).'.'.$extension;
                        $dest=$dest_dir.$newphotoname;
                        //move_uploaded_file($_FILES['Filedata']['tmp_name'], iconv("UTF-8","gb2312",$dest));
                        move_uploaded_file($_FILES['Filedata']['tmp_name'], $dest);
                        //chmod($dest, 0755);
                        //如果宽度大于600则要进行裁剪
                        $arr=getimagesize($dest);
                        if($arr[0]>600){
                                $thumb_w=600;
                            $this->_creat_photothumbs($dest,$thumb_w);
                        }
                        //生成缩略图
                        $config2['image_library'] = 'gd2';
                        $config2['source_image'] = $dest;
                        $config2['create_thumb'] = TRUE;
                        $config2['maintain_ratio'] = TRUE;
                        $config2['width'] = 170;
                        $config2['height'] = 150;
                        $config2['master_dim']="width";
                        $config2['thumb_marker']="_1";
                        $this->load->library('image_lib', $config2);
                        $this->image_lib->resize();
                        echo $dest;
                }
        }
}
?>

好了，可以测试了。