<?php
  
  
   function prepend($string, $orig_filename) {
    $context = stream_context_create();
    $orig_file = fopen($orig_filename, 'r', 1, $context);
  
    $temp_filename = tempnam(sys_get_temp_dir(), 'php_prepend_');
    file_put_contents($temp_filename, $string);
    file_put_contents($temp_filename, $orig_file, FILE_APPEND);
  
    fclose($orig_file);
    return $temp_filename;
  }
  
   $file=$_GET['path'];
   //echo $file;
   $dir='/home/pi/Desktop/vAlert/rec/';
   $fileArray=explode('/',$file);
   //print_r($fileArray);
   $filename=$fileArray[count($fileArray)-1];
   if(substr($filename,0,4)=="DIN2")
   {  $string[0]="DIN Report of ".substr($filename,3,4)."-".substr($filename,7,2)."-".substr($filename,9,2)."
  ";
      $string[1]="Hour:Minutes Seconds,Warning Level,Din Relay Register,Z-axis Peak,Z-axis: Frequency,Z-axis time in seconds,X-axis:Peak,X-axis:Frequency, X-axis time in seconds,Y-axis:Peak,Y-axis:Frequency,Y-axis time in seconds,Vector-axis Peak, Vector-axis:Frequency, Vector-axis time in seconds
  ";
      $tmp=file($file);
      $myfileArray=array_merge($string,$tmp);
      $mytempFile=$dir.'download.csv';
      $fp=fopen($mytempFile,'w') or die("Cannot write  file ");
      foreach ($myfileArray as $key => $value) {
      	fwrite($fp,$value);
      }
      header("Content-type:application/pdf");
      header('Content-Disposition: attachment; filename=' . $filename);
      readfile( $mytempFile);
     unlink($mytempFile);
   }
   else{
  
   	//echo $filename;
   	header("Content-type:application/pdf");
      header('Content-Disposition: attachment; filename=' . $filename);
      readfile( $file);
      //unlink($tmp);
   //echo '<script> window.history.back();</script>';
   }
  
  ?>