»mkfile function

	function mkfile($filename, $data='', $chmod=0644) {
		if ($data) {
			// serialize array
			if (is_array($data)) {
				$h = @fopen($filename, 'w');
				@fwrite($h, serialize($data));
			}
			// string
			else {
				$h = @fopen($filename, 'a');
				@flock($h, LOCK_EX);
				@ftruncate($h, 0);
				@fwrite($h, $data);
				@flock($h, LOCK_UN);
			}
			@fclose($h);
		}
		// file used as switch
		else {
			@fclose(@fopen($filename, 'x'));
		}
		@umask(0000);
		@chmod($filename, $chmod);
	}

mkfile('dateiname.txt');

mkfile('dateiname.txt', 'Die Datei beinhaltet einen Satz');

mkfile('dateiname.txt', array('die' => 'Datei', 'beinhaltet' => 'ein_Array'));