Download an Image file from Remote Server using PHP

To get remote file:

function downloadRemoteFile($url,$dir,$file_name = NULL){
if($file_name == NULL){ $file_name = basename($url);}
$url_stuff = parse_url($url);
$port = isset($url_stuff['port']) ? $url_stuff['port'] : 80;

$fp = fsockopen($url_stuff['host'], $port);
if(!$fp){ return false;}

$query = 'GET ' . $url_stuff['path'] . " HTTP/1.0\n";
$query .= 'Host: ' . $url_stuff['host'];
$query .= "\n\n";

fwrite($fp, $query);

while ($tmp = fread($fp, 8192)) {
$buffer .= $tmp;
}

preg_match('/Content-Length: ([0-9]+)/', $buffer, $parts);
$file_binary = substr($buffer, - $parts[1]);
if($file_name == NULL){
$temp = explode(".",$url);
$file_name = $temp[count($temp)-1];
}
$file_open = fopen($dir . "/" . $file_name,'w');
if(!$file_open){ return false;}
fwrite($file_open,$file_binary);
fclose($file_open);
return true;
}



function call:

$tmp_filename = "tmp_".$filename_noext.$_POST['ext'];
downloadRemoteFile($filename, $tmp_path, $tmp_filename);