php断点续传之文件分割合并

是实现断点续传，就需要把大文件分割成多个小文件，然后单个上传。传完后在合并。

│ merge.php –合并文件脚本
│ merge.zip –合并后文件
│ socket.zip –需要分割的文件
│ split.php –分割文件脚本
│
└─split –分割后小文件目录

下面是源码

split.php

<?php$fp = fopen("socket.zip", "rb");$filesize = 10;$i = 0;$no = 1;while(!feof($fp)){    $file = fread($fp, $filesize);    $fp2 = fopen("./split/socket.port".sprintf("%04d",$no).".".$i."-".($i+$filesize).".tmp", "wb");    fwrite($fp2,  $file, $filesize);    fclose($fp2);    $i+=$filesize+1;$no++;}fclose($fp);

merge.php

<?php$filelist = glob('./split/*socket*.tmp');$filesize = 10;//print_r($filelist);$mergeFileName = 'merg.zip';unlink($mergeFileName);    $fp2 = fopen($mergeFileName,"w+");foreach($filelist as $k => $v){    $fp = fopen($v,  "rb");     $content = fread($fp, $filesize);     fwrite($fp2, $content, $filesize);     unset($content);     fclose($fp);     echo $k,"\n";}    fclose($fp2);