1949啦网--小小

引入JS

<script type="text/javascript" src="http://cdn.bootcss.com/jquery/1.11.1/jquery.min.js"></script> 

HTML

<a class="btn" id="btn">上传图片</a>

CSS

.btn{-webkit-border-radius:3px;-moz-border-radius:3px;-ms-border-radius:3px;-o-border-radius:3px;border-radius:3px;background-color:#0cc;color:#fff;display:inline-block;height:28px;line-height:28px;text-align:center;width:72px;transition:background-color .2s linear 0s;border:none;cursor:pointer;margin:0 0 20px}
.btn:hover{background-color:#f55;text-decoration:none}
.ul_pics li{position:relative;float:left;margin:5px;width:calc(100% / 6 - 10px);border:1px solid #ddd;text-align:center;}
.ul_pics li img{max-width:100%;max-height:100%;}
.ul_pics li p{position:absolute;bottom:0;overflow:hidden;margin:0;width:100%;background:#ddd;color:#fff;text-overflow:ellipsis;white-space:nowrap;}
.progress{position:absolute;top:45%;left:2%;margin:0;width:96%;background:#fff;}
.bar{display:block;width:0;height:20px;background-color:#03A9F4;}
.percent{position:absolute;top:0;left:45%;display:inline-block;color:#F44336;line-height:20px;}
@media (max-width: 900px){.ul_pics li{width:calc(100% / 4 - 10px);}}
@media (max-width: 600px){.ul_pics li{width:calc(100% / 3 - 10px);}}

JS

var uploader = new plupload.Uploader({ //创建实例的构造方法 
runtimes: 'html5,flash,silverlight,html4', 
//上传插件初始化选用那种方式的优先级顺序 
browse_button: 'btn', 
// 上传按钮 
url: "ajax.php", 
//远程上传地址 
flash_swf_url: 'plupload/Moxie.swf', 
//flash文件地址 
silverlight_xap_url: 'plupload/Moxie.xap', 
//silverlight文件地址 
filters: { 
    max_file_size: '1gb', 
    //最大上传文件大小（格式100b, 10kb, 10mb, 1gb） 
    mime_types: [ //允许文件上传类型 
    { 
        title: "files", 
        extensions: "jpg,png,gif" 
    }] 
}, 
multi_selection: true, 
//true:ctrl多文件上传, false 单文件上传 
init: { 
    FilesAdded: function(up, files) { //文件上传前 
        if ($("#ul_pics").children("li").length > 30) { 
            alert("您上传的图片太多了！"); 
            uploader.destroy(); 
        } else { 
            var li = ''; 
            plupload.each(files, 
            function(file) { //遍历文件 
                li += "<li id='" + file['id'] + "'><div class='progress'><span class='bar'></span><span class='percent'>0%</span></div></li>"; 
            }); 
            $("#ul_pics").append(li); 
            uploader.start(); 
        } 
    }, 
    UploadProgress: function(up, file) { //上传中，显示进度条 
        $("#" + file.id).find('.bar').css({ 
            "width": file.percent + "%" 
        }).find(".percent").text(file.percent + "%"); 
    }, 
    FileUploaded: function(up, file, info) { //文件上传成功的时候触发 
        var data = JSON.parse(info.response); 
        $("#" + file.id).html("<div class='img'><img src='" + data.pic + "'/></div><p>" + data.name + "</p>"); 
    }, 
    Error: function(up, err) { //上传出错的时候触发 
        alert(err.message); 
    } 
} 
}); 
uploader.init();

AJAX.PHP

    <?php
$typeArr = array("jpeg","jpg", "png", "gif");//允许上传文件格式 
$path = "uploads/";//上传路径 
if (isset($_POST)) { 
    $name = $_FILES['file']['name']; 
    $size = $_FILES['file']['size']; 
    $name_tmp = $_FILES['file']['tmp_name']; 
    if (empty($name)) { 
        echo json_encode(array("error"=>"您还未选择图片")); 
        exit; 
    } 
    $type = strtolower(substr(strrchr($name, '.'), 1)); //获取文件类型 
     
    if (!in_array($type, $typeArr)) { 
        echo json_encode(array("error"=>"请上传jpg,png或gif类型的图片！")); 
        exit; 
    } 
    if ($size > (10000 * 1024)) { 
        echo json_encode(array("error"=>"图片大小已超过10000KB！")); 
        exit; 
    } 
     
    $pic_name = time() . rand(10000, 99999) . "." . $type;//图片名称 
    $pic_url = $path . $pic_name;//上传后图片路径+名称 
    if (move_uploaded_file($name_tmp, $pic_url)) { //临时文件转移到目标文件夹 
           echo json_encode(array("error"=>"0","pic"=>$pic_url,"name"=>$pic_name));
    } else { 
           echo json_encode(array("error"=>"上传有误，请检查服务器配置！")); 
        };
}; ?>`请输入代码`

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