php断点续传之文件分割合并详解

2017-02-22 15:01:20 php
这篇文章主要为大家详细介绍了php断点续传之文件分割合并,具有一定的参考价值,感兴趣的小伙伴们可以参考一下

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 $k,"\n";
}
  fclose($fp2);

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