Detailed explanation of file splitting and merging using PHP to implement breakpoint resume transfer

This article mainly introduces the file segmentation and merging of PHP breakpoint resume transfer in detail. It has certain reference value. Interested friends can refer to

php to implement breakpoint resume transfer. You need to split the large file into multiple small files and then upload them individually. Merge after transmission.

│ merge.php – merge file script
│ merge.zip – merged file
│ socket.zip – file that needs to be split
│ split.php – Split file script
│
└─split – Split small file directory

The following is the source code

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(&#39;./split/*socket*.tmp&#39;);
$filesize = 10;

//print_r($filelist);
$mergeFileName = &#39;merg.zip&#39;;

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);

The above is this article The entire content, I hope it will be helpful to everyone's study.

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