How do you embed PHP commands inside another PHP variable set?

[Phil Powell]

I would like a very nice PHP shortcut to dynamically setting a
variable value by embedding PHP commands inside, which is what I can
easily do in TCL:

set stuff "hello [if {[regexp {/dev} $env(HTTP_HOST)]} {set x "
devworld"} else {set x " world"}]"

in TCL this would set stuff to either "hello world" or, if you're in
/dev "hello devworld"

how can I accomplish this great TCL feature in PHP? I haven't found a
way yet, everything I have done has so far produced parse errors:

$stuff = "hello" . (if (preg_match('/\/dev/i', $HTTP_HOST)) { $stuff
..= ' devworld'; } else { $stuff .= ' world'; });

Phil

[Jeffrey Silverman]

Re: How do you embed PHP commands inside another PHP variable set?

On Tue, 30 Sep 2003 10:03:22 -0700, Phil Powell wrote:
<snip!>[color=blue]
> $stuff = "hello" . (if (preg_match('/\/dev/i', $HTTP_HOST)) { $stuff .= '
> devworld'; } else { $stuff .= ' world'; });
>
> Phil[/color]

try it like this:

// Separate statments into two. I don't think an if..else statment returns
// anything and thus you are concatenating NULL onto the end of $stuff.
$stuff = "hello";
if (preg_match('/\/dev/i', $HTTP_HOST) {
$stuff .= 'devworld';
} else {
$stuff .= ' world';
}


OR like this:

$stuff="hello" .
(preg_match('/\/dev/i', $HTTP_HOST) ? 'devworld' : 'world';
// Line is broken after concat operator to fit it in 80 columns!

Warning: I have not tested either solution!

later...
--
Jeffrey D. Silverman | jeffrey AT jhu DOT edu
Johns Hopkins University | Baltimore, MD
Website | http://www.wse.jhu.edu/newtnotes/