# thinkphp5+layui实现多图上传保存到数据库，可以实现图片自由排序，自由删除。
# 公共css代码
在使用前一定要在页面加载layui的css和js
```
<style>
.layui-upload-img { width: 90px; height: 90px; margin: 0; }
.pic-more { width:100%; left; margin: 10px 0px 0px 0px;}
.pic-more li { width:90px; float: left; margin-right: 5px;}
.pic-more li .layui-input { display: initial; }
.pic-more li a { position: absolute; top: 0; display: block; }
.pic-more li a i { font-size: 24px; background-color: #008800; }
#slide-pc-priview .item_img img{ width: 90px; height: 90px;}
#slide-pc-priview li{position: relative;}
#slide-pc-priview li .operate{ color: #000; display: none;}
#slide-pc-priview li .toleft{ position: absolute;top: 40px; left: 1px; cursor:pointer;}
#slide-pc-priview li .toright{ position: absolute;top: 40px; right: 1px;cursor:pointer;}
#slide-pc-priview li .close{position: absolute;top: 5px; right: 5px;cursor:pointer;}
#slide-pc-priview li:hover .operate{ display: block;}
</style>
多图上传页面html代码
<div class="layui-form-item" id="pics">
<div class="layui-form-label">相册图集</div>
<div class="layui-input-block" style="width: 70%;">
<div class="layui-upload">
<button type="button" class="layui-btn layui-btn-primary pull-left" id="slide-pc">选择多图</button>
<div class="pic-more">
<ul class="pic-more-upload-list" id="slide-pc-priview">
</ul>
</div>
</div>
</div>
</div>
多图添加或修改公共js代码
<script>
layui.use('upload', function(){
var $ = layui.jquery;
var upload = layui.upload;
upload.render({
elem: '#slide-pc',
url: '{:url('admin/common/upload')}',
size: 500,
exts: 'jpg|png|jpeg',
multiple: true,
before: function(obj) {
layer.msg('图片上传中...', {
icon: 16,
shade: 0.01,
time: 0
})
},
done: function(res) {
layer.close(layer.msg());//关闭上传提示窗口
if(res.status == 0) {
return layer.msg(res.message);
}
//$('#slide-pc-priview').append('<input type="hidden" name="pc_src[]" value="' + res.filepath + '" />');
$('#slide-pc-priview').append('<li class="item_img"><div class="operate"><i class="toleft layui-icon"></i><i class="toright layui-icon"></i><i class="close layui-icon"></i></div><img src="__STATIC__/../' + res.filepath + '" class="img" ><input type="hidden" name="pc_src[]" value="' + res.filepath + '" /></li>');
}
});
});
//点击多图上传的X,删除当前的图片
$("body").on("click",".close",function(){
$(this).closest("li").remove();
});
//多图上传点击<>左右移动图片
$("body").on("click",".pic-more ul li .toleft",function(){
var li_index=$(this).closest("li").index();
if(li_index>=1){
$(this).closest("li").insertBefore($(this).closest("ul").find("li").eq(Number(li_index)-1));
}
});
$("body").on("click",".pic-more ul li .toright",function(){
var li_index=$(this).closest("li").index();
$(this).closest("li").insertAfter($(this).closest("ul").find("li").eq(Number(li_index)+1));
});
</script>
```
# //多图上传PHP接口代码
```
//通用缩略图上传接口
public function upload()
{
if($this->request->isPost()){
$res['code']=1;
$res['msg'] = '上传成功！';
$file = $this->request->file('file');
$info = $file->move('../public/upload/admin/');
//halt( $info);
if($info){
$res['name'] = $info->getFilename();
$res['filepath'] = 'upload/admin/'.$info->getSaveName();
}else{
$res['code'] = 0;
$res['msg'] = '上传失败！'.$file->getError();
}
return $res;
}
}
```
# //添加控制器代码
```
//添加
public function add()
{
if(request()->isPost())
{
//dump(input('post.'));
$res = $this->db->tianjia(input('post.'));
if($res['valid'])
{
$this->success($res['msg']);
}else{
$this->error($res['msg']);
}
}
return $this->fetch();
}
```
# 添加模型代码
```
//添加
public function tianjia($data)
{
//halt($data);
$count = count($data['pc_src']);//获取传过来有几张图片
if($count){
for($i = 0;$i< $count;$i++){
$data['pics'][]=array("src"=>$data['pc_src'][$i]);
}
$data['pics'] = json_encode($data['pics']);
//$data['cc'] = json_decode($data['bb']);
//halt($data);
}
$result = $this->validate(true)->allowField(true)->save($data);
if($result){
// 验证失败 输出错误信息
return ['valid'=>1,'msg'=>'添加成功'];
//dump($this->getError());
}else{
return ['valid'=>0,'msg'=>$this->getError()];
}
}
```
# //编辑页面
html代码
```
<div class="layui-form-item" id="pics">
<div class="layui-form-label">相册图集</div>
<div class="layui-input-block" style="width: 70%;">
<div class="layui-upload">
<button type="button" class="layui-btn layui-btn-primary pull-left" id="slide-pc">选择多图</button>
<div class="pic-more">
<ul class="pic-more-upload-list" id="slide-pc-priview">
{foreach name="oldData['pics']" item="vo" key="k"}
<li class="item_img">
<div class="operate"><i class="toleft layui-icon"></i><i class="toright layui-icon"></i><i class="close layui-icon"></i></div>
<img src="__STATIC__/../{$vo.src}" class="img" >
<input type="hidden" name="pc_src[]" value="{$vo.src}" />
</li>
{/foreach}
</ul>
</div>
</div>
</div>
</div>
```
