Adding To Variables

[mooboo]

How do i add numbers to variables...

something like...

$var = 0

$var + 1 = $var ;overwrite the variable with a new number

IS THIS POSSIBLE????

[Somerset]

$var = 0

$var = 1 + 0

you have to put the varible first then the equasion...

$var = 2 * 2

etc......... and yes you also can add varibles together if they both are numbers...

[scriptkitty]

You almost had it the first time.

$var = 0
$var  = $var + 1;overwrite the variable with a new number one higher

[CyberSlug]

I'll add my 2 cents:

$var = 0 is an example of an assignment statement.

In (almost) all programming languages, a single variable must appear on the left side of the equal sign. The right hand side can contain variables or literal strings/numbers.

0 = $var IS INVALID because the left-hand side is not a variable.

$var + 1 = $var is invalid for a simlar reason.

$var = $var is fine, although not very useful. [Technical note: $var is being used two diffrent ways in this example. The left $var (L-value) is a variable being assigned to; the right $var (R-value) is a variable being read. Or something like that--I'm a little rusty on all the technical stuff....]

$foo = $bar ;This means take the value stored in $bar and assign it to a variable named $foo.

Hope that helps

Edited March 15, 2004 by CyberSlug