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

rush: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

rush:PHP;"> //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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