PHP implementation of WeChat applet picture upload example code sharing

Mini programs have become a popular development direction due to their advantages of being lightweight and fast, but due to their unique packaging, many novices are confused. This article uses PHP backend to implement a simple mini program image upload, so that everyone can have a clearer understanding of mini program development.

<text>上传图片</text>
<view>
 
<button bindtap="uploadimg">点击选择上传图</button>
 
</view>
<image src=&#39;{{source}}&#39; style=&#39;width:600rpx; height:600rpx&#39; />

##2. js file

Page({
  /**
   * 页面的初始数据
   */
  data: {
　　//初始化为空
    source:''
  },
/**
 * 上传图片
 */
  uploadimg:function(){
    var that = this;
    wx.chooseImage({  //从本地相册选择图片或使用相机拍照
      count: 1, // 默认9
      sizeType: ['original', 'compressed'], // 可以指定是原图还是压缩图，默认二者都有
      sourceType: ['album', 'camera'], // 可以指定来源是相册还是相机，默认二者都有
      success:function(res){
        //console.log(res)
       //前台显示
        that.setData({
          source: res.tempFilePaths
        })
        // 返回选定照片的本地文件路径列表，tempFilePath可以作为img标签的src属性显示图片
        var tempFilePaths = res.tempFilePaths
         wx.uploadFile({
          url: 'http://www.website.com/home/api/uploadimg',
          filePath: tempFilePaths[0],
          name: 'file',
         
          success:function(res){
            //打印
            console.log(res.data)
          }
        })
       
      }
    })
  },
)}

3. PHP backend code

// 上传图片
    public function uploadimg()
    {
         $file = request()->file('file');
        if ($file) {
            $info = $file->move('public/upload/weixin/');
            if ($info) {
                $file = $info->getSaveName();
                $res = ['errCode'=>0,'errMsg'=>'图片上传成功','file'=>$file];
                return json($res);
            }
        }
       
    }

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