If n is even
if ( ! ( $ n & 1 ) ) { $ a = abs ( $ a ) ; $ b = abs ( $ b ) ; } if ( $ a == $ b ) echo " a ^ n ▁ is ▁ equal ▁ to ▁ b ^ n " ; else if ( $ a > $ b ) echo " a ^ n ▁ is ▁ greater ▁ than ▁ b ^ n " ; else echo " b ^ n ▁ is ▁ greater ▁ than ▁ a ^ n " ; }