0 vs false

[esingley]

So, this was driving me insane today, and I'm sure there's an easy
answer that I'm just missing.

Say I have an expression where 0 is acceptable as a TRUE response. But
how, in PHP, do I say that 0 = true since it treats 0 = FALSE = "".
For example, if I look for "foo" in a string using strpos:

if (strpos("foo bar", "foo")) {
echo "foo found at the beginning of the phrase.";
}

This should evaluate to TRUE, but it doesn't since it finds "food" at
position 0, which then evaluates to FALSE.

I tried casting, isset, is_null, and a few other siller options. I
eventually worked around it by using substr_count, but mostly I'm just
curious about the general answer to the question.

Thanks.

[Jerry Stuckle]

es******@gmail.com wrote:

So, this was driving me insane today, and I'm sure there's an easy
answer that I'm just missing.

Say I have an expression where 0 is acceptable as a TRUE response. But
how, in PHP, do I say that 0 = true since it treats 0 = FALSE = "".
For example, if I look for "foo" in a string using strpos:

if (strpos("foo bar", "foo")) {
echo "foo found at the beginning of the phrase.";
}

This should evaluate to TRUE, but it doesn't since it finds "food" at
position 0, which then evaluates to FALSE.

I tried casting, isset, is_null, and a few other siller options. I
eventually worked around it by using substr_count, but mostly I'm just
curious about the general answer to the question.

Thanks.

if (strpos("foo bar", "foo") !== false) {
echo "foo found";
}

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
js*******@attglobal.net
==================

[Geoff Berrow]

Message-ID: <11**********************@u72g2000cwu.googlegroups .com> from
es******@gmail.com contained the following:

Say I have an expression where 0 is acceptable as a TRUE response. But
how, in PHP, do I say that 0 = true since it treats 0 = FALSE = "".

You'll be embarrassed to learn that there is a section on is in the
manual. ;-)

http://uk.php.net/strpos

--
Geoff Berrow (put thecat out to email)
It's only Usenet, no one dies.
My opinions, not the committee's, mine.
Simple RFDs http://www.ckdog.co.uk/rfdmaker/

[esingley]

Argh, a RTFM would have saved me an hour. Thanks, though! That, of
course, solved my problem right away.

[esingley]

Argh, a RTFM would have saved me an hour. Thanks, though! That, of
course, solved my problem right away.