Json_encode - How have have a function as value

[chielsen]

I use json_encode to parse data which ill use with js on my site.

Now i want to have a function instead of a string/int.

Like this:

json_encode(array('key' => 'Math.round(15)'));

 

But now Math.round(15) is a string and not a function. How do i get this right?

[fanfavorite]

Will it not work without the quotes?

 

json_encode(array('key' => Math.round(15)));

 

Or just do it like this:

 

$mathround = Math.round(15);

json_encode(array('key' => $mathround));

 

[chielsen]

Nope, if i do the first i get:

 

{"key":"Math15"}

 

Which makes sence because php thinks i want to use the dot operator on the constant Math (which doesn't exists, so php assumes the string 'Math') and the result of the round function which is 15 (round(15) is 15.

 

So i have a problem. Do i need to make my own function to get rid of the quotes?