Something

private function get_file_output ($file, $error_line) // Gets file and error line. returns output array
	{
		$content_arr = file ($file);
		print "<pre>";
		print_r ($content_arr);
		
		$line_start = $error_line - 5 > 0 ? $error_line - 5 : 0; // Line to start
		$line_end = $error_line + 5 <= sizeof ($content_arr) ? $error_line + 5 : sizeof ($content_arr); // Line to end
		
		$output_arr = array ();
		
		for (; $line_end > $line_start; $line_start++) // Makes output array
		{
			$output_arr [$line_start] = $content_arr [$line_start];
		}
			
		return $output_arr;
	}