addition function or script help

[hyperimage]

hello!
is there a way to make this correctly with some php script:

$x = '2';
$y = '3';
$z = $x + $y;

i tryed in many ways but i stuck every time!
also i search for this in php.net and nothing again under "plus" or "addition"!
any help will be appreciated!
thanx in advance!
sven

[markl999]

<?php
$x = '2';
$y = '3';
$z = $x + $y;
echo $z; //echo's 5
$z = $x.$y;
echo $z; //echo's 23
?>

Take your pick!!!!!!

[hyperimage]

so...
dont tell me i was right???

[hyperimage]

so practicaly is that right?

<?php 
$sql = mysql_query("SELECT * FROM  some_table ORDER BY id DESC LIMIT 1"); 
if($row = mysql_fetch_array($sql));
list($width, $height, $type, $attr) = getimagesize("$path/$image"); 
$z = $xw + $xlw; 
$i = $yh + $ylh; 
for($x=$z;$x<=$width;$x++) && for($y=$i;$y<=$height;$y++);
?>

<style>
.view {
clip:rect (0,$x,$y,0)
}
</style>