Display custom field and php function randomly

You can call a random function with code like this:

// TEST RANDOM SELECTION OF FUNCTION
$choices = array('test1','test2','test3','test4');
$choice = $choices[rand(0,sizeof($choices)-1)];
$choice();

I assumed you would be pasting it inside some existing php. Maybe you just needed to put it inside the php tags?

<?php // TEST RANDOM SELECTION OF FUNCTION
$choices = array('test1','test2','test3','test4');
$choice = $choices[rand(0,sizeof($choices)-1)];
$choice();
?>

And, you did code your own functions and use their names instead of ‘test1’, ‘test2’, etc, didn’t you?

The items in the $choices array need to be only the function names:

$choices = array('kd_template_ad');

Any parameters have to be supplied in the $choice() line.

I don’t understand what you want with the custom field. Do you want to get the name of the function from a custom field?

Let me see if I understand. You really don’t want a random function, you want to run kd_template_ad with a value supplied from a custom field in the post. But you want to sometimes run it and sometimes not, randomly. Is this correct?

Well, your English is a LOT better than my French!! I think I understand now, but let me restate:

IF there is a co-author
   IF there is a custom field AND it names a function
      Call randomly either kd_template_ad(1) or
         the function named by the custom field.
   ELSE
      ? what to do here
   ENDIF
ELSE
   ? what to do here
ENDIF

Now, it is a little more complicated if the custom field function needs to pass parameters, so I need to know how they will be passed. It would be easier if any parameters were in a separate field, but they can probably be parsed from the one value if not.

Also, please tell me your custom field name.

Great! It will take a little time to code, and I can only do limited testing, but I will post some sample code later.

The long paragraph is a little confusing. Suppose the coauthor wants to call the function myfunction(‘myparameter’). You cannot assign that string to a variable and call it. This will not work:

$thefunc = "myfunction('myparameter')";
$thefunc();

It must be done like this:

$thefunc = "myfunction";
$theparam = 'myparameter';
$thefunc($theparam);

So we need to have the function name separate from its parameters.

This is not a problem if the coauthor functions do not need parameters, but if they do, we need to define how they will be passed in the custom field. It would be easier if the function name is in one field, and the parameters in another.