PHP教程
php + layui 文件上传 以及 拖拽上传
本文主要是介绍php + layui 文件上传 以及 拖拽上传，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！
HTML:
<div id="box">
<div id="drop_area">将文件拖拽到此区域</div>
<div id="area_img"> <img src="../images/tzsc.png" id="img_upfiles" style="cursor: pointer"/> </div>
</div>
<div class="layui-form-item">
<div class="layui-input-block">
<div class="layui-upload" style="margin-left: 730px">
<button type="button" class="layui-btn layui-btn-normal" id="upfiles"> <i class="layui-icon"></i> 文件上传 </button>
<span style="color: #666"></span>
</div>
<table id="tabl1" class="layui-table" style="width: 850px;margin-top: -38px;margin-left: -110px;">
<colgroup>
<col width="300"><col width="80"><col width="160"><col width="300">
</colgroup>
<thead>
<tr>
<th>文件名称</th><th>类型</th><th>操作</th><th>备注</th>
</tr>
</thead>
<tbody id="fileList"></tbody>
</table>
</div>
</div>
JS:
XMLhttpReuest.js
function ajaxFunction()
{
var xmlHttp;
try
{
// Firefox, Opera 8.0+, Safari
xmlHttp=new XMLHttpRequest();
}
catch (e)
{
// Internet Explorer
try
{
xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
}
catch (e)
{
try
{
xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
}
catch (e)
{
alert("您的浏览器不支持AJAX！");
return false;
}
}
}
return xmlHttp;
}
{?*拖拽上传*?}
<script>
window.onload = function () {
var box = document.getElementById('box');
box.ondragenter = function (e) {
e.preventDefault();
}
box.ondragover = function (e) {
e.preventDefault();
}
box.ondragleave = function (e) {
e.preventDefault();
}
box.ondrop = function (e) {
e.preventDefault();
var file = e.dataTransfer.files[0];
var formData = new FormData();
formData.append('file', file);
var xml = ajaxFunction();
xml.open("post", './ajax.files.upload.php?MID={?$lev.MID?}&upfilecode={?$upfilecode?}&path=djyp_file', true);
xml.send(formData);
xml.onreadystatechange = function () {
console.log(xml.readyState);
console.log(xml.status);
if(xml.readyState == 4 && xml.status==200){
var res=JSON.parse(xml.responseText);
if(res.code > 0){
layer.msg(res.msg);
}else {
var tr = $(['<tr>'
, ' <td><input type="text" autocomplete="off" placeholder="请输入文件名称" value="' + res.old_name + '" name="old_name[' + res.id + ']"></td>'
, '<td>' + res.file_ext + '</td>'
, '<td>'
, '<a class="layui-btn layui-btn-warm layui-btn-xs fileread" href="' + res.path + res.new_name +'.'+ res.file_ext + '" target="_blank"> <i class="layui-icon layui-icon-read"></i>查看 </a>'
, '<button type="button" class="layui-btn layui-btn-xs filedel" style="background: #ff5722;"> <i class="layui-icon layui-icon-delete"></i>删除 </button>'
, '</td>'
, ' <td><input type="text" autocomplete="off" placeholder="请输入备注" name="old_name1[' + res.id + ']"></td>'
, '</tr>'].join(''));
//删除
tr.find('.filedel').on('click', function () {
$.post('ajax.attach.file.del.php?MID={?$lev.MID?}',{id:res.id},function(data){
if (data.code > 0)
parent.layer.msg(data.msg, {offset: '0px', icon: 2, time: 1000});
else
tr.remove();
});
});
$("#fileList").append(tr);
var title = $("#title");
if(title.val() == '')
title.val(res.old_name);
}
}
}
}
}
</script>
php:
ajax.files.upload.php
header("Content-Type:text/html;charset=UTF-8");$CODE = $_GET['upfilecode'];
$PATH = $_GET['path'];
$a = new UPFILE($CODE, $PATH, $_FILES['file'], $pl);
class UPFILE
{
public $pl = '';
public $file = '';
public function __construct($code, $path, $file, $pl)
{
if ($code == '')
$this->ExtFrm(1, "缺少上传编码");
if ($path == '')
$this->ExtFrm(2, "缺少上传路径");
if (!$file)
$this->ExtFrm(3, "找不到上传文件");
if ($file['size'] > 1024 * 1024 * 50) {
$this->ExtFrm(3, "上传失败,文件大小超过限制（文件大小：50MB）");
}
$size=round($file['size']/1024/1024, 2);
$this->pl = $pl;
$this->file = $file;
$this->type = $path;
$filePath = $this->createFile($path);
$fileOld = $this->verifyFile();
$this->fileupload($code, $filePath, $fileOld,$size);
}
/**
* Method:createFile
* Desc:创建文件路径
*/
public function createFile($path)
{
$Ym = date('Ym');
$filepath = $Ym . ($path != "" ? "/" : "") . $path;
$fullpath = '../upfiles/' . $filepath;
if (!is_dir($fullpath)) {
$res = mkdir($fullpath, 0777, true);
}
return array($filepath . "/", $fullpath . "/");
}
/**
* Method:verifyFile
* Desc:验证文件格式
*/
public function verifyFile()
{
$pinfo = pathinfo($this->file["name"]);
$extension = strtolower($pinfo['extension']);
switch ($this->type) {
case 'message_img': //消息推送 - 富文本 图片上传
$file_format = array("jpg", "jpeg", "gif", "png");
if (!in_array($extension, $file_format)) {
$this->ExtFrm(4, "上传失败,文件格式不正确(支持:jpg,gif,png)");
}
break;
default:
$file_format = array("jpg", "jpeg", "gif", "png", "rar", "zip", "doc", "docx", "xls", "xlsx", "pdf", "txt", "ppt", "pptx", "tif",'mp4');
if (!in_array($extension, $file_format)) {
$this->ExtFrm(4, "上传失败,文件格式不正确(支持:jpg,gif,png,rar,zip,doc,docx,xls,xlsx,pdf,txt,ppt,pptx,tif,mp4)");
}
break;
}
return array("filename" => $pinfo['filename'], "extension" => $extension);
}
/**
* Method:fileupload
* Desc:上传文件
*/
public function fileupload($code, $filepath, $fileold,$size)
{
$old_name = $fileold['filename'];
$new_name = time() . rand(0, 500000) . dechex(rand(0, 10000));
move_uploaded_file($this->file['tmp_name'], $filepath[1] . $new_name . "." . $fileold['extension']);
if ($this->type != 'message_img') {
$sql = "insert into system_attach (`BM`,`YFJMC`,`XFJMC`,`WJLJ`,`WJLX`,`CJSJ`,`CJRID`,`CJRMC`,`SIZE`) values (:BM,:YFJMC,:XFJMC,:WJLJ,:WJLX,:CJSJ,:CJRID,:CJRMC,:SIZE)";
$this->pl->query($qry, $sql, array(
":BM" => $code,
":YFJMC" => $old_name . ".",
":XFJMC" => $new_name . "." . $fileold['extension'],
":WJLJ" => $filepath[0],
":WJLX" => $fileold['extension'],
":CJSJ" => date("Y-m-d H:i:s"),
":CJRID" => $_SESSION['UID'],
":CJRMC" => $_SESSION['NAME'],
":SIZE" => $size,
));
$id = $this->pl->insert_id();
}
$this->ExtFrm(0, "上传成功", $id, $filepath[1], $new_name, $old_name, $fileold['extension']);
}
/**
* Method:extFrm
* Desc:结果返回
*/
public function extFrm($code, $msg, $id = 0, $filepath = "", $new_name = '', $old_name = '', $file_ext = "")
{
if ($code > 0) {
$ExtFrm = array("code" => $code, "msg" => $msg);
} else if ($this->type == 'message_img') {
$title = $new_name . "." . $file_ext;
$ExtFrm = array("code" => $code, "msg" => $msg, "data" => array("src" => $filepath . $title, "title" => $title));
} else {
$ExtFrm = array("code" => $code, "msg" => $msg, "id" => $id, "path" => $filepath, "new_name" => $new_name, "old_name" => $old_name, "file_ext" => $file_ext);
}
exit(json_encode($ExtFrm));
}
}
?>
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