i cant figure out whats wrong with this loop, it doesnt error out but it doesnt work

for ($counter=1; $counter==20; $counter++) {
$_5_price = "update_5_price";
$_5_price.= $counter;
$frame = "frame";
$frame.= $counter;

$style = "style";
$style.= $counter;
$style = $_REQUEST[$style];
$style = preg_replace("/####/", " ", $style);

echo $_5_price;
echo "<br>";
echo $frame;
echo "<br>";
echo $style;
}