php断点续传之文件分割合并详解

php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 $k,"";}  fclose($fp2);

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