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

Example#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

Note: 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.

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


	PHP5中文手册 func_get_arg func_num_args Function handling PHP Manual 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 Example#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 Note: 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. Note: 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() func_get_arg func_num_args Function handling PHP Manual

func_get_args

说明

返回值

错误／异常

范例

注释

参见