func_get_args
(PHP 4, PHP 5)
func_get_args — Returns an array comprising a function's argument list
Description
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.
Return Values
Returns an array in which each element is a copy of the corresponding member of the current user-defined function's argument list.
Changelog
| Version | Description |
|---|---|
| 5.3.0 | This function can now be used in parameter lists. |
| 5.3.0 | If this function is called from the outermost scope of a file which has been included by calling include() or require() from within a function in the calling file, it now generates a warning and returns FALSE. |
Errors/Exceptions
Generates a warning if called from outside of a user-defined function.
Examples
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);
?>
The above example will output:
Number of arguments: 3<br /> Second argument is: 2<br /> Argument 0 is: 1<br /> Argument 1 is: 2<br /> Argument 2 is: 3<br />
Example #2 func_get_args() example before and after PHP 5.3
test.php
<?php
function foo() {
include './fga.inc';
}
foo('First arg', 'Second arg');
?>
fga.inc
<?php
$args = func_get_args();
var_export($args);
?>
Output previous to PHP 5.3:
array ( 0 => 'First arg', 1 => 'Second arg', )
Output in PHP 5.3 and later:
Warning: func_get_args(): Called from the global scope - no function context in /home/torben/Desktop/code/ml/fga.inc on line 3 false
Notes
Note:
Because this function depends on the current scope to determine parameter details, it cannot be used as a function parameter in versions prior to 5.3.0. If this value must be passed, the results should be assigned to a variable, and that variable should be passed.
Note: This function returns a copy of the passed arguments only, and does not account for default (non-passed) arguments.
See Also
- func_get_arg() - Return an item from the argument list
- func_num_args() - Returns the number of arguments passed to the function