How to use php and layui to implement image upload and preview code-PHP Tutorial-php.cn

How to use php and layui to implement image upload and preview code

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Release： 2023-04-03 13:18:02

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This article introduces you to the code about how to use PHP and layui to upload and preview images. It has a good reference value and I hope it can help friends in need.

End code:

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>upload模块快速使用</title>
    <link rel="stylesheet" href="/layui/css/layui.css" media="all">
</head>
<body>
    
    <button type="button" class="layui-btn" id="test1">
      <i class="layui-icon">&#xe67c;</i>上传图片
    </button>
    <div class="layui-upload-list">
        <img class="layui-upload-img" width="100px" height="100px" id="demo1">
        <p id="demoText"></p>
    </div>

    <script src="/layui/layui.js"></script>
    <script>

        layui.use(&#39;upload&#39;, function(){
            var $ = layui.jquery
            ,layer = layui.layer
            ,upload = layui.upload;

            var uploadInst = upload.render({
                elem:&#39;#test1&#39;
                ,url:&#39;/index/upload/upload&#39;
                ,accept:&#39;file&#39;  // 允许上传的文件类型
                ,auto:true // 自动上传
                ,before:function (obj) {
                    // console.log(obj);
                    // 预览
                    obj.preview(function(index,file,result) {
                        // console.log(file.name);    //图片地址
                        // console.log(file.type);    //图片格式
                        // console.log(file.size);    //图片大小
                        // console.log(file);    //图片地址
                        $(&#39;#demo1&#39;).attr(&#39;src&#39;,result); //图片链接 base64
                    });
                }
                // 上传成功回调
                ,done:function(res) {
                    // console.log(upload);
                    console.log(res);
                    if (res.code == 0) {
                        layer.msg(res.msg);
                    }else{
                        layer.msg(res.msg);
                    }
                }
                // 上传失败回调
                ,error:function(index,upload) {
                    // 上传失败
                }
            });

        })
    </script>
</body>
</html>

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php Backend:

public function upload()
    {
        
        $file = request()->file(&#39;file&#39;);
        $info = $file->move(ROOT_PATH . &#39;public&#39; . DS . &#39;uploads&#39;);
        if($info) {
            $data[&#39;code&#39;] = 0;
            $data[&#39;msg&#39;] = $info->getSaveName();
        }else{
            $data[&#39;code&#39;] = 1;
            $data[&#39;msg&#39;] = $file->getError();
        }
            return json($data);
    }

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