Podręcznik PHP
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# func_get_arg

(PHP 4 )

func_get_arg -- Return an item from the argument list

## Description

mixed func_get_arg ( int arg_num)

Returns the argument which is at the `arg_num`'th offset into a user-defined function's argument list. Function arguments are counted starting from zero. func_get_arg() will generate a warning if called from outside of a function definition.

If `arg_num` is greater than the number of arguments actually passed, a warning will be generated and func_get_arg() will return `FALSE`.

`<?php function foo() { $numargs = func_num_args(); echo "Number of arguments: $numargs<br />\n"; if ($numargs >= 2) { echo "Second argument is: " . func_get_arg(1) . "<br />\n"; } } foo (1, 2, 3); ?>`

func_get_arg() may be used in conjunction with func_num_args() and func_get_args() to allow user-defined functions to accept variable-length argument lists.

> Notatka: This function was added in PHP 4.

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create_function | Początek rozdziału | func_get_args