gistfile1.txt

//if the file doesn't exist, we'll try to copy it.
				        if (!file_exists($imagepath)) {
				        	//Get the file
							if ($content = file_get_contents($m[1])) {
								if (!empty($content)) {
									//Store in the filesystem.
									$fp = fopen($imagepath, "w");
									fwrite($fp, $content);
									fclose($fp);
								}
							} else {
								if (!function_exists('curl_init')){ 
							        die('CURL is not installed!');
							    }
							    
							    $ch = curl_init();
							    curl_setopt($ch, CURLOPT_URL, $m[1]);
							    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
							    $output = curl_exec($ch);
							    curl_close($ch);
							    
							    $content = $output;
							    
							    $fp = fopen($imagepath, "w");
								fwrite($fp, $content);
								fclose($fp);
							}
				        }