retrive the function arguments in php

The func_get_args() function returns an array of argument that a function has in it's parameter list. There are also func_num_args() and func_get_arg() functions which can be used to get function parameter information. let's see zend mock certification test question below.

Question:
What would you replace ??????? with, below, to make the string Hello, World! be displayed?



Answer:

1. There is no way to do this
2. $string = $argv[1];
3. $string = $_ARGV[0];
This will return the script name.
4. list($string) = func_get_args();
5. $string = get_function_args()
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