php3-list | 199807

Re: [PHP3] From: Colin Viebrock (cmv <email protected>)
Date: 07/02/98

>>eg. echo "This is my ".$a[b][1]." variable";
>
>That's a feature I didn't know about!
>Can I use it to add strings together?
>
>$a=$b.$c;
>instead of
>$a=$b+$c; ?

Since the first release of PHP3, the "." operator has been fro string
concatenation. Your first example above will work as expected, the second
one won't. The second one will try (I believe) to convert $b and $c to
numbers, and then add them, probably resulting in $a equaling 0 (a number,
not a string).

So yes: "." adds strings together, everywhere.

>Does it work on functions too?

How do you mean? You can't add two functions. However, if you have
something like:

<?
function foo() {
        return "Hello ";
}

function bar() {
        return "World";
}

$a = foo().bar();
echo $a;

echo foo().bar();

?>

You will get "Hello World" twice.

.........................................................................
Colin Viebrock Creative Director - Private World Communciations
cmv <email protected> http://www.privateworld.com
ICQ: 11386088

                                              Something funny goes here. 

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