php+resumablejs实现的分块上传 断点续传功能示例

本文实例讲述了php+resumablejs实现的分块上传 断点续传功能。分享给大家供大家参考，具体如下：

resumablejs官网 http://www.resumablejs.com/

本站下载地址。

upload.html

 Select files



   

upload.php

= ($totalSize - $chunkSize + 1)) {
  // create the final destination file 
  if (($fp = fopen('temp/'.$fileName, 'w')) !== false) {
   for ($i=1; $i<=$total_files; $i++) {
    fwrite($fp, file_get_contents($temp_dir.'/'.$fileName.'.part'.$i));
    _log('writing chunk '.$i);
   }
   fclose($fp);
  } else {
   _log('cannot create the destination file');
   return false;
  }
  // rename the temporary directory (to avoid access from other 
  // concurrent chunks uploads) and than delete it
  if (rename($temp_dir, $temp_dir.'_UNUSED')) {
   rrmdir($temp_dir.'_UNUSED');
  } else {
   rrmdir($temp_dir);
  }
 }
}
////////////////////////////////////////////////////////////////////
// THE script
////////////////////////////////////////////////////////////////////
//check if request is GET and the requested chunk exists or not. this makes testChunks work
if ($_SERVER['REQUEST_METHOD'] === 'GET') {
 $temp_dir = 'temp/'.$_GET['resumableIdentifier'];
 $chunk_file = $temp_dir.'/'.$_GET['resumableFilename'].'.part'.$_GET['resumableChunkNumber'];
 if (file_exists($chunk_file)) {
   header("HTTP/1.0 200 Ok");
  } else
  {
   header("HTTP/1.0 404 Not Found");
  }
 }
// loop through files and move the chunks to a temporarily created directory
if (!empty($_FILES)) foreach ($_FILES as $file) {
 // check the error status
 if ($file['error'] != 0) {
  _log('error '.$file['error'].' in file '.$_POST['resumableFilename']);
  continue;
 }
 // init the destination file (format .part<#chunk>
 // the file is stored in a temporary directory
 $temp_dir = 'temp/'.$_POST['resumableIdentifier'];
 $dest_file = $temp_dir.'/'.$_POST['resumableFilename'].'.part'.$_POST['resumableChunkNumber'];
 // create the temporary directory
 if (!is_dir($temp_dir)) {
  mkdir($temp_dir, 0777, true);
 }
 // move the temporary file
 if (!move_uploaded_file($file['tmp_name'], $dest_file)) {
  _log('Error saving (move_uploaded_file) chunk '.$_POST['resumableChunkNumber'].' for file '.$_POST['resumableFilename']);
 } else {
  // check if all the parts present, and create the final destination file
  createFileFromChunks($temp_dir, $_POST['resumableFilename'], 
    $_POST['resumableChunkSize'], $_POST['resumableTotalSize']);
 }
}

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希望本文所述对大家PHP程序设计有所帮助。