ThinkPHP多图上传带缩略图功能
- WBOYoriginal
- 2016-06-07 11:42:301190parcourir
功能简介：
支持多图上传并生成缩略图
可自定义缩略图数量与尺寸
文件默认保存在 “./data/attachment/photo/年月/日/” 目录下
访问地址：http://localhost/upload/photo
如有问题请各位大侠海涵并指正，谢谢~
效果：
首先新建一个控制器文件，命名为：UploadController.class.php，
位置：application\Home\Controller\UploadController.class.php
控制器代码：<?php <br />
<br>
/**<br>
* 图片上传控制器<br>
* @author Jiekii <jiekii><br>
* @website http://jiekii.com<br>
* @date 2014-02-21<br>
**/<br>
<br>
namespace Home\Controller;<br>
<br>
class UploadController extends HomeController {<br>
public function photo() {<br>
if(IS_POST) {<br>
//设置文件保存目录<br>
$baseDir = './data/';<br>
$attachDir = './attachment/photo/'.date('Ym').'/';<br>
$subDir = date('d');<br>
$saveName = date('His').strtolower(random(16));<br>
<br>
//上传类配置信息<br>
$config = array(<br>
'maxSize' => 2097152,<br>
'exts' => array('jpg', 'jpeg', 'png', 'gif'),<br>
'rootPath' => $baseDir,<br>
'savePath' => $attachDir,<br>
'subName' => array('date', 'd'),<br>
'saveName' => $saveName,<br>
'hash' => false<br>
);<br>
<br>
//初始化上传类<br>
$upload = new \Think\Upload($config);<br>
<br>
//检查是否选择图片<br>
$inputName = 'photo';<br>
$total = 0;<br>
$data = array();<br>
foreach($_FILES[$inputName] as $key => $value) {<br>
foreach($value as $k => $v) {<br>
$data[$k][$key] = $v;<br>
if($key == 'name' && $v) {<br>
$total++;<br>
}<br>
}<br>
}<br>
<br>
if(!$total) {<br>
$this->error('请先选择要上传的图片！');<br>
}<br>
<br>
$uploadSuccess = $uploadFailure = 0;<br>
$result = array();<br>
<br>
//缩略图列表，数组为空则不生成缩略图<br>
//键为缩略图文件名后缀，例如：20140221abc_a.jpg<br>
//值为缩略图宽/高<br>
$thumbList = array(<br>
'a' => array(150, 150),<br>
'c' => array(250, 250),<br>
'm' => array(500, 500)<br>
);<br>
<br>
//初始化缩略图类<br>
if(!empty($thumbList)) {<br>
$image = new \Think\Image();<br>
}<br>
<br>
foreach($data as $key => $value) {<br>
if(!$value['name']) continue;<br>
<br>
//如果多图则从第二张开始设置新的文件名<br>
if($key >= 1) {<br>
$upload->saveName = date('His').strtolower(random(16));<br>
}<br>
<br>
//开始上传<br>
$file = $upload->upload(array($inputName => $value));<br>
<br>
//上传成功<br>
if(!empty($file)) {<br>
$uploadSuccess++;<br>
<br>
//缩略图<br>
if(!empty($thumbList)) {<br>
$path = $baseDir.$file[$inputName]['savepath'].$upload->saveName;<br>
$fileExt = $file[$inputName]['ext'];<br>
$filePath = $path.'.'.$fileExt;<br>
<br>
//生成缩略图，按照原图的比例<br>
foreach($thumbList as $thumbName => $thumbSize) {<br>
if(!$thumbName || empty($thumbSize)) continue;<br>
<br>
$image->open($filePath);<br>
$image->thumb($thumbSize[0], $thumbSize[1])->save($path.'_'.$thumbName.'.'.$fileExt);<br>
}<br>
}<br>
} else {<br>
$uploadFailure++;<br>
}<br>
$result[] = array($upload->getError(), $file);<br>
}<br>
<br>
//成功提示<br>
if($uploadSuccess) {<br>
$this->success($uploadSuccess.'张图片上传成功！');<br>
} else {<br>
$this->error('上传失败！');<br>
}<br>
} else {<br>
$value = array(<br>
'meta_title' => '上传照片'<br>
);<br>
$this->assign($value)->display();<br>
}<br>
}<br>
}</jiekii>html代码：<form>
<br>
<p>图片1：<input></p>
<br>
<p>图片2：<input></p>
<br>
<p>图片3：<input></p>
<br>
<p><button>确定上传</button></p>
<br>
</form>
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