PHP大文件分片上传
实现1：前端把文件FILE对象切割成N块，ajax发到后台，php接收文件并判断接收了N块时合并所接收的文件块，最后删除文件块
<!doctype html> <html> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> <style> #progress{ width: 300px; height: 20px; background-color:#f7f7f7; box-shadow:inset 0 1px 2px rgba(0,0,0,0.1); border-radius:4px; background-image:linear-gradient(to bottom,#f5f5f5,#f9f9f9); } #finish{ background-color: #149bdf; background-image:linear-gradient(45deg,rgba(255,255,255,0.15) 25%,transparent 25%,transparent 50%,rgba(255,255,255,0.15) 50%,rgba(255,255,255,0.15) 75%,transparent 75%,transparent); background-size:40px 40px; height: 100%; } form{ margin-top: 50px; } </style> </head> <body> <div id="progress"> <div id="finish" style="width: 0%;" progress="0"></div> </div> <form action="./upload.php"> <input type="file" name="file" id="file"> <input type="button" value="停止" id="stop"> </form> <script> var fileForm = document.getElementById("file"); var stopBtn = document.getElementById(\'stop\'); var upload = new Upload(); fileForm.onchange = function(){ upload.addFileAndSend(this); } stopBtn.onclick = function(){ this.value = "停止中"; upload.stop(); this.value = "已停止"; } function Upload(){ var xhr = new XMLHttpRequest(); var form_data = new FormData(); // const LENGTH = 1024 * 1024; const LENGTH = 10 * 10; var start = 0; var end = start + LENGTH; var blob; var blob_num = 1; var is_stop = 0 //对外方法，传入文件对象 this.addFileAndSend = function(that){ var file = that.files[0]; blob = cutFile(file); sendFile(blob,file); blob_num += 1; } //停止文件上传 this.stop = function(){ xhr.abort(); is_stop = 1; } //切割文件 function cutFile(file){ var file_blob = file.slice(start,end); start = end; end = start + LENGTH; return file_blob; }; //发送文件 function sendFile(blob,file){ var total_blob_num = Math.ceil(file.size / LENGTH); form_data.append(\'file\',blob); form_data.append(\'blob_num\',blob_num); form_data.append(\'total_blob_num\',total_blob_num); form_data.append(\'file_name\',file.name); xhr.open(\'POST\',\'./upload.php\',false); xhr.onreadystatechange = function () { var progress; var progressObj = document.getElementById(\'finish\'); if(total_blob_num == 1){ progress = \'100%\'; }else{ progress = Math.min(100,(blob_num/total_blob_num)* 100 ) +\'%\'; } progressObj.style.width = progress; var t = setTimeout(function(){ if(start < file.size && is_stop === 0){ blob = cutFile(file); sendFile(blob,file); blob_num += 1; }else{ setTimeout(t); } },1000); } xhr.send(form_data); } } </script> </body> </html>
<?php class Upload{ private $filepath = \'./upload\'; //上传目录 private $tmpPath; //PHP文件临时目录 private $blobNum; //第几个文件块 private $totalBlobNum; //文件块总数 private $fileName; //文件名 public function __construct($tmpPath,$blobNum,$totalBlobNum,$fileName){ $this->tmpPath = $tmpPath; $this->blobNum = $blobNum; $this->totalBlobNum = $totalBlobNum; $this->fileName = $fileName; $this->moveFile(); $this->fileMerge(); } //判断是否是最后一块，如果是则进行文件合成并且删除文件块 private function fileMerge(){ if($this->blobNum == $this->totalBlobNum){ $blob = \'\'; for($i=1; $i<= $this->totalBlobNum; $i++){ $blob .= file_get_contents($this->filepath.\'/\'. $this->fileName.\'__\'.$i); } file_put_contents($this->filepath.\'/\'. $this->fileName,$blob); $this->deleteFileBlob(); } } //删除文件块 private function deleteFileBlob(){ for($i=1; $i<= $this->totalBlobNum; $i++){ @unlink($this->filepath.\'/\'. $this->fileName.\'__\'.$i); } } //移动文件 private function moveFile(){ $this->touchDir(); $filename = $this->filepath.\'/\'. $this->fileName.\'__\'.$this->blobNum; move_uploaded_file($this->tmpPath,$filename); } //API返回数据 public function apiReturn(){ if($this->blobNum == $this->totalBlobNum){ if(file_exists($this->filepath.\'/\'. $this->fileName)){ $data[\'code\'] = 2; $data[\'msg\'] = \'success\'; $data[\'file_path\'] = \'http://\'.$_SERVER[\'HTTP_HOST\'].dirname($_SERVER[\'DOCUMENT_URI\']).str_replace(\'.\',\'\',$this->filepath).\'/\'. $this->fileName; } }else{ if(file_exists($this->filepath.\'/\'. $this->fileName.\'__\'.$this->blobNum)){ $data[\'code\'] = 1; $data[\'msg\'] = \'waiting for all\'; $data[\'file_path\'] = \'\'; } } header(\'Content-type: application/json\'); echo json_encode($data); } //建立上传文件夹 private function touchDir(){ if(!file_exists($this->filepath)){ return mkdir($this->filepath); } } } //实例化并获取系统变量传参 $upload = new Upload($_FILES[\'file\'][\'tmp_name\'],$_POST[\'blob_num\'],$_POST[\'total_blob_num\'],$_POST[\'file_name\']); //调用方法，返回结果 $upload->apiReturn();
实现2：前端把文件切割成二进制信息并一段一段传给后台，php把接收到的二进制信息整合到一个文件即可
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>大文件切割上传</title> <link rel="stylesheet" href=""> <script> function selfile(){ const LENGTH = 1024 * 1024 * 10;//每次上传的大小 var file = document.getElementsByName(\'video\')[0].files[0];//文件对象 var filename=document.getElementsByName(\'video\')[0].files[0].name; var totalSize = file.size;//文件总大小 var start = 0;//每次上传的开始字节 var end = start + LENGTH;//每次上传的结尾字节 var fd = null//创建表单数据对象 var blob = null;//二进制对象 var xhr = null;//xhr对象 while(start < totalSize){ fd = new FormData();//每一次需要重新创建 xhr = new XMLHttpRequest();//需要每次创建并设置参数 xhr.open(\'POST\',\'upload.php\',false); blob = file.slice(start,end);//根据长度截取每次需要上传的数据 fd.append(\'video\',blob);//添加数据到fd对象中 fd.append(\'filename\',filename); //获取文件的名称 xhr.send(fd);//将fd数据上传 //重新设置开始和结尾 start = end; end = start + LENGTH; } } </script> </head> <body> <h1>大文件切割上传</h1> <input type="file" name="video" onchange="selfile();" /> </body> </html>
<?php /** * 大文件切割上传，把每次上传的数据合并成一个文件 */ $filename = \'./uploads/\'.$_POST[\'filename\'];//确定上传的文件名 //第一次上传时没有文件，就创建文件，此后上传只需要把数据追加到此文件中 if(!file_exists($filename)){ move_uploaded_file($_FILES[\'video\'][\'tmp_name\'],$filename); }else{ file_put_contents($filename,file_get_contents($_FILES[\'video\'][\'tmp_name\']),FILE_APPEND); } ?>
版权声明：本文为zhylioooo原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。