Zip File To Memory.

[The Little Guy]

I have this method that puts files into a zip file from an array list, it looks like this:

public function zip($files = array(), $maxMB = 2, $flag = ZIP_NEW){
$this->memory_size = $maxMB * 1024 * 1024;
$zip_id = $this->zip_id;
$this->zip[] = new ZipArchive();
$this->zip_id++;
if($flag == ZIP_NEW){
	$open = $this->zip[$zip_id]->open("php://temp/maxmemory:$this->memory_size", ZipArchive::CREATE);
	$files = (array)$files;
	if(!empty($files)){
		foreach($files as $file){
			if(is_file($file)){
				$this->zip[$zip_id]->addFile($file);
			}
		}
	}
	$this->zip[$zip_id]->close();
}
$this->function_name = __FUNCTION__;
return $this;
}

 

I then download them like this:

public function download($download_data, $download_name, $type = DOWNLOAD_FILE){
header("Pragma: public;");
header("Expires: 0;");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0;");
header("Content-Type: application/force-download;");
header("Content-Type: application/octet-stream;");
header("Content-Type: application/download;");
header("Content-Transfer-Encoding: binary;");
header("Content-Disposition: attachment; filename=$download_name;");
if($type == DOWNLOAD_FILE){
	header("Content-Length: ".filesize($download_data).";");
	if($download_data == PHP_MEMORY){
		$handle = fopen(PHP_MEMORY."/maxmemory:$this->memory_size", 'r+');
		echo stream_get_contents($handle);
	}else{
		readfile($download_data);
	}
}elseif($type == DOWNLOAD_STRING){
	header("Content-Length: ".mb_strlen($download_data).";");
	echo $download_data;
}
$this->function_name = __FUNCTION__;
return $this;
}

 

When I run this code:

$files = array("file1.php","file2.php");
$live->zip($files)->download(PHP_MEMORY, "download.zip");

 

It downloads the file, the only problem is, is that when I open the file I get an error saying the file can not be opened. I know when I actually save it to a file instead of in memory it works. So, I am not sure if it isn't working in the download portion or the create file portion, as I have never worked with php://temp before. Any thoughts on why this doesn't work when using php://temp?