Prepare value for database

function mysql_prep($value){
		$magic_quote_active = get_magic_quotes_gpc();
		$new_enough_php = function_exists("mysql_real_escape_string");//returns true if PHP>v4.3
		if($new_enough_php){
			//undo magic quotes damege
			if($magic_quote_active){$value = stripslashes($value);}
			$value=mysql_real_escape_string($value);
		}else{
			//if no magic quotes add slashes
			if(!$magic_quote_active){$value=addslashes($value);}
		}
                return $value;
 
	}