(PHP 5 >= 5.1.3, PHP 7) Gets system load average

(PHP 4, PHP 5, PHP 7) Tells what the user's browser is capable of

(PHP 4, PHP 5, PHP 7) Equivalent to exit

(PHP 4, PHP 5, PHP 7) Returns connection status bitfield

(PHP 4, PHP 5, PHP 7) Alias of

(PHP 5, PHP 7) Return source with stripped comments and whitespace

(PHP 4, PHP 5, PHP 7) Defines a named constant

(PHP 5 >= 5.1.0, PHP 7) Make the script sleep until the specified time

(PHP 4, PHP 5, PHP 7) Output a message and terminate the current script

(PHP 4, PHP 5, PHP 7) Check whether client disconnected