GRANT ALL ON firmy TO 'adam'@'localhost';
GRANT ALTER, CREATE, DROP ON firmy TO 'anna'@localhost;
GRANT SELECT, INSERT, UPDATE ON firmy TO 'tomasz'@'localhost';

$x = 0;
for ($i = 0; $i < 10; $i++)
{
    $tabl[$i] = $x;
    $x = $x + 10;
}

 var obj1 = {
    czescUlamkowa: 10,
    czescCalkowita: 20,
    oblicz: function () { ... }
}

$tab = array();
for ($i = 0; $i < 10; $i++) {
    $tab[$i] = rand(-100, 100);
}
foreach ($tab as $x) {
    if ($x < 0) {
        echo "$x ";
    }
}

SELECT AVG(cena) FROM uslugi;