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# XXXI. Miscellaneous functions

These functions were placed here because none of the other categories seemed to fit.

Table of Contents
connection_aborted — Returns true if client disconnected.
connection_status — Returns connection status bitfield.
connection_timeout — Return true if script timed out.
define — Defines a named constant.
defined — Checks whether a given named constant exists.
die — Output a message and terminate the current script.
eval — Evaluate a string as PHP code.
exit — Terminate current script.
func_get_arg — Return an item from the argument list.
func_get_args — Returns an array comprising a function's argument list.
func_num_args — Returns the number of arguments passed to the function.
function_exists — Return true if the given function has been defined.
get_browser — Tells what the user's browser is capable of.
ignore_user_abort — Set whether a client disconnect should abort script execution.
iptcparse — Parse a binary IPTC http://www.xe.net/iptc/ block into single tags.
leak — Leak memory.
pack — Pack data into binary string.
register_shutdown_function — Register a function for execution on shutdown.
serialize — Generates a storable representation of a value.
sleep — Delay execution.
uniqid — Generate a unique id.
unpack — Unpack data from binary string.
unserialize — Creates a PHP value from a stored representation.
usleep — Delay execution in microseconds.

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