php predefiend constants

Predefined constants:

connection_aborted -- Returns TRUE if client disconnected

connection_status -- Returns connection status bitfield

connection_timeout -- Return TRUE if script timed out

constant -- Returns the value of a constant

define -- Defines a named constant

defined -- Checks whether a given named constant exists

die -- Equivalent to exit()

eval -- Evaluate a string as PHP code

exit -- Output a message and terminate the current script

get_browser -- Tells what the user's browser is capable of

highlight_file -- Syntax highlighting of a file

highlight_string -- Syntax highlighting of a string

ignore_user_abort -- Set whether a client disconnect should abort script execution

pack -- Pack data into binary string

php_check_syntax -- Check the PHP syntax of (and execute) the specified file

php_strip_whitespace -- Return source with stripped comments and whitespace

show_source -- Alias of highlight_file()

sleep -- Delay execution

time_nanosleep -- Delay for a number of seconds and nanoseconds

uniqid -- Generate a unique ID

unpack -- Unpack data from binary string

usleep -- Delay execution in microseconds