From the server command line
echo '<?php if(is_int(strpos("a", "b"))) print "y"; else print "n"; ?>' | php
prints "n". In a question text
{if(is_int(strpos("a", "b")), "y", "n")}
gives string "y". Is this a bug, or have I understood something wrong?

Hi,
from the LimeSurvey point of view the result is fine.
strpos("a", "b") -> 0 -> "not found"
And is_int(0) is TRUE.

But you will get the same result here
strpos("a", "a") -> 0 -> "found at index 0"

In my opinion the problem is that LimeSurvey does not support "===". Therefore "strpos" can't distinguish between "0 as 'not found'" and "0 as 'found at index 0'"
In all my examples where I use "strpos" I prepend the string by a character like "#" that the first index that can be found at least has index "1".

Joffm

Nope, that's not the problem.

x {strpos("a", "b")} y xx {strpos("a", "a")} yy

gives "x y xx 0 yy". But the fix works still and I have already sent that to the person who had this problem.

Yes, but here
x {intval(strpos("a", "b"))} y xx {intval(strpos("a", "a"))} yy
you get
x 0 y xx 0 yy

and you're back to your first question about "is_int".

So, avoid to get a positive result of "0".

Joffm
 

True. To confirm: I guess we agree that there is a bug in is_int and I can make a bug report?

Jmantysalo wrote:

True. To confirm: I guess we agree that there is a bug in is_int and I can make a bug report?
 

Complex to fix

Else about strpos : i always use (in LimeSurvey) {strpos(join("#",MyVar),"a")} then just > 0

DenisChenu wrote:

Complex to fix

 

True, but let's try at least. bugs.limesurvey.org/view.php?id=17950