Posted by tihu on 05/05/06 21:16

ImOk wrote:
> I come from the Visual Foxpro world, which is one reason I love PHP.
> VFP is a scripting type language with macro substitution abilities
> similar to PHP.
>
> Besides the regular expansion I can do crazy things (VFP uses & instead
> of $):
>
> x="sales"
> sales="1000"
> salestax="8.25"
> ? &x
> .........prints 1000
> ? &x.tax
> ...........prints 8.25

Just noticed the &$.tax thingy, neat trick..

In php you need to use the dot operator( joins two strings together)
and curly braces ( Think of it like php interprets the contents of {}
as an expression)
http://uk.php.net/manual/en/language.types.string.php#language.types.string.syntax.complex

$x = 'sales'
$sales = 1000;
$salestax = 8.25;

echo $$x; //prints 1000
echo ${$x.'tax'}; //prints 8.25

but
echo $$x.'tax'; // without {} it prints 1000tax

Tim

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