Taking a random percante from a config

So I'm currently working on a lucky plugin for someone, and I was wondering If it would be possible to take a percanteage(or a number) from the config and that's the chance of code executing. Would it be possible?

 

yes, you can use

PHP:

mt_rand(1, 100);


as 1% to 100%, then check if rand result is less than or equal to the number on the config

 

How would I check it?

 

Equate it to 100

PHP:

if(mt_rand(percentage, 100) === 100)


But this wont work with floating percentages as you can already tell.