<?php
     
    $db_spojeni= mysqli_connect
    ('localhost', 'acerr' , '****' , 'promene', 3306);
     
    if ($db_spojeni)
    echo 'vse ok'. '<br />';
    else
    echo 'si blb';
     
    $objekt_vysledku = mysqli_query($db_spojeni , 'SELECT a  FROM promena');
     
    if (!$objekt_vysledku)
    die ('Chyba');
     
$radek = mysqli_fetch_array($objekt_vysledku);


while ($radek)
{ 
$a = $radek['a'];
}

$b=$a+1;
$tb="promena";
$zmena=mysql_query("UPDATE `$tb` SET `a` = `$a` WHERE `a` = `$b` , $db_spojeni");


while ($radek)
{ 
$a = $radek['a'];
}



if ($a==1)
echo 'alda je supr';

echo $a


     
    

 
    ?>