Hi,
I've used rand() like below in an equation question to get a random number or 1 or 2. This works fine:

{if(is_empty(condition1),rand(1,2),condition1)} .

However, I would now like to use random_int, but when I do that it says Undefined function even though the website is using PHP 7.0. This is what I now have.
{if(is_empty(condition1),random_int(1,2),condition1)}

Can someone please help?

Please, read the manual about implemented functions
www.limesurvey.org/manual/Expression_Man...mplemented_Functions

Joffm

gorp wrote: However, I would now like to use random_int, but when I do that it says Undefined function even though the website is using PHP 7.0.

The ExpressionScript/ExpressionManager functions are using PHP functions, but not exposing all functions of PHP.

github.com/LimeSurvey/LimeSurvey/blob/26...s/em_core_helper.php

If you want to use random_int, you would need to submit a feature request or modify the LimeSurvey code.

Well,
without having to hack the core, you may create a question of type short text and do an ajax call.

Like this:
And in the called php script you grab "min" and "max" and echo random_int(min,max);.

Just an idea.

Joffm

Or use chance.js - chancejs.com/

jelo wrote: ....
If you want to use random_int, you would need to submit a feature request or modify the LimeSurvey code.

No,

Not if you use 4.X : www.limesurvey.org/manual/ExpressionManagerStart

See this sample : github.com/LimeSurvey/LimeSurvey/tree/ma...mo/demoAddEmFunction

And since random_int is a PHP function, you can set the function as "static" : see github.com/LimeSurvey/LimeSurvey/tree/ma...lugins/statFunctions