<?php

function displayTable($table) {

    $server = "localhost";
    $user = "root";
    $pass = "";
    $table = $table;
    $BD = 'encuestas';

    $conexion = mysqli_connect($server, $user, $pass, $BD);

    if(!$result = mysqli_query($conexion, "SELECT * FROM $table;")) die();

    $rawdata = array();
    $i = 0;

    while($row = mysqli_fetch_array($result)) {

        $rawdata[$i] = $row;

        $i++;

    }

    $close = mysqli_close($conexion);

    echo '<table width="100%" border="1" style="text-align:center;">';

    $columnas = count($rawdata[0])/2;

    $filas = count($rawdata);

    for($i = 1 ; $i < count($rawdata[0]); $i += 2){

        next($rawdata[0]);

        echo "<th><b>".key($rawdata[0])."</b></th>";

        next($rawdata[0]);

    }

    for($i = 0; $i < $filas; $i++){

        echo "<tr>";

        for($j = 0; $j < $columnas; $j++){

            echo "<td>".$rawdata[$i][$j]."</td>";

        }

        echo "</tr>";
    }

    echo '</table>';

}

?>