Check if multiple values are all false or all true

Question

How can I check if 20 variables are all true, or if 20 variables are all false?

if possible without using a really long if ...

the variables are actually array elements:

array('a'=> true, 'b'=> true ...)

to make it more clear:

• if the array has both true and false values return nothing
• if the array has only true values return true
• if the array has only false values return false :)

Answer 1

if(count(array_unique($your_array)) === 1)     return current($your_array);  else return; 

Answer 2

You could use in_array

Ex. for all true:

if(in_array(false, $array, true) === false){     return true; } else if(in_array(true, $array, true) === false){     return false; } else{      return 'nothing'; }