why does die() produce false results?

ppowell

$blah = 'wwwwwww';
echo strpos($blah, 'w');
print_r(strpos($blah, 'w'));
die(strpos($blah, 'w'));

The following in PHP 4.3.2 produces this:

11

I am baffled as to why die() produces false results (which was my earlier problem with strpos()) and yet echo and others produce just fine.

Thanx
Phil

devinemke

did some tests, aparently die() and exit() cannot take a variable or expression directly as an argument. check this out:

$blah = 'wwwwwww';

exit(strpos($blah, 'w')); // outputs nothing
exit('' . strpos($blah, 'w')); // outputs "0"

ppowell

Ok that is truly weird. Where is this documented if anyone knows? I would not know that about either die() or exit()... thanx!

Phil

LordShryku

Check the manual.
http://www.php.net/manual/en/function.exit.php
It's taking the integers you're passing it as status codes. When passed a string it echos, but not an integer.

$blah = 'aaaawwwwwww';
$this = strpos($blah, 'w');
exit("$this"); // echo's "4"

$blah = 'aaaawwwwwww';
$this = strpos($blah, 'w');
exit($this); // echo's nothing

ppowell

Ok I read it, and honestly, still don't get it.

Sorry, please explain (I read the manual on exit())

Phil

LordShryku

Here. Just take this quote from it:

Note: PHP >= 4.2.0 does NOT print the status if it is an integer.

strpos returns an integer of the position of the letter in the string. So saying die(strpos($blah, 'w')); is like saying die(0), which won't print.

ppowell

I understand that, but still don't get it. die() fails to print an integer.. Why? Isn't PHP multi-roled? that is 0 can take the role of '0' or false or null?

I am not understanding this.

Phil

LordShryku

Not the way you want it to be. strpos returns an integer. Not a string that can be interpreted as an integer as well. And die/exit can't guess if it's passed an integer whether you want it treated as a string or an integer. If you want it to be a string, make it a string.

ppowell

That is really unclear to me but now I understand, basically, die() can only take a string, strpos() passes only an integer.

AUGH!

Thanx
Phil