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func_get_args

(PHP 4, PHP 5)

func_get_args -- Returns an array comprising a function's argument list

说明

array func_get_args ( void )

Gets an array of the function's argument list.

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

返回值

Returns an array in which each element is a copy of the corresponding member of the current user-defined function's argument list.

错误／异常

Generates a warning if called from outside of a user-defined function.

范例

例 1. func_get_args() example

<?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";
    }
    $arg_list = func_get_args();
    for ($i = 0; $i < $numargs; $i++) {
        echo "Argument $i is: " . $arg_list[$i] . "<br />\n";
    }
}

foo(1, 2, 3);
?>

注释

注意: Because this function depends on the current scope to determine parameter details, it cannot be used as a function parameter. If you must pass this value, assign the results to a variable, and pass the variable.

注意: This function returns a copy of the passed arguments only, and does not account for default (non-passed) arguments.

参见

func_get_arg()
func_num_args()

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