L2j SQL QUERY Universal By Ivan Pires

function info_table($tabela,$coluna){
        global $conn;
        $tabela = strtolower($tabela);
        $coluna = strtolower($coluna);
        $stmt = $conn->prepare('SHOW COLUMNS FROM '.$tabela);
        if($stmt->execute()){
                if($coluna == "accesslevel"){
                        while($row = $stmt->fetch(\PDO::FETCH_ASSOC)){
                                if(preg_match("/^access/i", $row["Field"]))
                                        return $row["Field"];
                        }
                }
                if($coluna == "charid"){
                        if($tabela == "characters" || $tabela == "heroes" || $tabela == "olympiad_nobles"){
                                while($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
                                        if ($row["Key"] == "PRI")
                                                return $row["Field"];
                                }
                        }else{
				$row = $stmt->fetch(\PDO::FETCH_ASSOC);
				return $row["Field"];
                        }
                }
        }
        return null;
}