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>XXIII. Function Handling functions</H1
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> These functions all handle various operations involved in working
with functions.
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><DT
><A
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>call_user_func</A
> —
Call a user function given by the first parameter
</DT
><DT
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>create_function</A
> — Create an anonymous (lambda-style) function</DT
><DT
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>func_get_arg</A
> — Return an item from the argument list</DT
><DT
><A
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>func_get_args</A
> —
Returns an array comprising a function's argument list
</DT
><DT
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>func_num_args</A
> —
Returns the number of arguments passed to the function
</DT
><DT
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>function_exists</A
> —
Return true if the given function has been defined
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><DT
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>register_shutdown_function</A
> —
Register a function for execution on shutdown
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