Examples: Bit shifting in PHP is arithmetic. Bits shifted off either end are discarded. Left shifts have zeros shifted

(PHP 4, PHP 5, PHP 7) Unpack data from binary string

(PHP 5 >= 5.0.0, PHP 7) Whether an offset exists

(PHP 4, PHP 5, PHP 7) Array of arguments passed to script

(PHP 5 >= 5.1.0, PHP 7) Halts the compiler execution