PHP大文件分块上传功能实例详解
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2022-06-14 14:26:33
本文实例讲述了php大文件分块上传功能。分享给大家供大家参考,具体如下:
前端代码
使用file.slice将文件进行分割,然后分别进行异步上传。
本文实例讲述了php大文件分块上传功能。分享给大家供大家参考,具体如下:
前端代码
使用file.slice将文件进行分割,然后分别进行异步上传。
<!doctype html> <html lang="zh-cn"> <head> <meta charset="utf-8"> <meta http-equiv="x-ua-compatible" content="ie=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title><%= title %></title> <!-- zui --> <link rel="stylesheet" href="http://zui.sexy/dist/css/zui.min.css" rel="external nofollow" > </head> <body> <div class="container" style="margin-top: 30px;"> <form class="form-inline" method="post" enctype="multipart/form-data"> <div class="form-group"> <input type="file" id="filebig" class="form-control"> </div> <button type="submit" class="btn btn-primary">提交</button> </form> </div> <!-- zui javascript 依赖 jquery --> <script src="http://zui.sexy/assets/jquery.js"></script> <!-- zui 标准版压缩后的 javascript 文件 --> <script src="http://zui.sexy/dist/js/zui.min.js"></script> <script type="text/javascript"> $('form').submit(function() { let file = $(":file")[0].files[0]; let filename = file.name; let filesize = file.size; console.log('filesize',filesize); let blocksize = 0.9*1024*1024; let num = math.ceil(filesize/blocksize); let start = 0; let end = 0; for(let i=1;i<=num;i++){ end = blocksize*i; if(end > filesize){ end = filesize; } let block = file.slice(start,end); start = end; let fd = new formdata(); fd.append('block',block); fd.append('name',filename); fd.append('total',num); fd.append('index',i); $.ajax({ url:"upload.php", type:"post", data:fd, async:true, processdata:false, contenttype:false, success:(res)=>{ console.log('res_'+i+":"); console.log(res); } }) } return false; }); </script> </body> </html>
后端代码
在所有的文件上传成功之后,合并生成原来的大文件
<?php $name = $_post['name']; $index = $_post['index']; $total = $_post['total']; echo "name:".$name.php_eol; echo "index:".$index.php_eol; echo "total:".$total.php_eol; move_uploaded_file($_files['block']['tmp_name'],'upload/'.$name."_".$index); $list = scandir('upload'); $num = count($list)-2; echo "cur_num:".$num.php_eol; if($num == $total){ echo "upload done".php_eol; echo $cmd = "cat upload/'{$name}_'* > upload/'{$name}'"; shell_exec($cmd); }
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