(PHP 4 >= 4.0.4, PHP 5, PHP 7) Calculates one's complement

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Scan for 1

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Bitwise AND

(PHP 5, PHP 7 >= 5.6.1) Import from a binary string

(PHP 5, PHP 7 >= 5.3.0) Tests if a bit is set

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Divide numbers

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Perfect square check

(PHP 5, PHP 7 >= 5.6.3) Random number GMP