note 77922 added to function.func-get-args
| From: | gerry+phpnet at buzka dot com | Date: | Thu, 20 Sep 2007 02:40:59 +0000 |
| Subject: | note 77922 added to function.func-get-args | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-130616@lists.php.net to get a copy of this message | ||
If you were having trouble understanding the func_get_default_args() function below, this example
should make things more clear. The author of the function could have written it like
func_get_expected_default_args() but that doesn't account for args which were passed but not
specified in the param list.
example:
<?php
function func_get_expected_default_args($a) {
// Grab the list of expected arguments.
return func_get_args();
}
function func_get_default_args($a) {
// Grab the list of expected arguments.
$args = array_slice(func_get_args(), 1);
// Append any unexpected agruments that may have been also passed
// to the function, but were not in the param list.
return array_merge($args, array_slice($a, count($args)));
}
function foo($bar=5, $foobar=3){
$args = func_get_expected_default_args2($bar, $foobar);
echo 'expected args: '. print_r($args, true);
$args = func_get_default_args(func_get_args(), $bar, $foobar);
echo 'all args: '. print_r($args, true);
}
foo(20);
foo(20, 95, 'unexpected', 'variables');
/*
Output:
expected args: Array
(
[0] => 20
[1] => 3
)
all args: Array
(
[0] => 20
[1] => 3
)
expected args: Array
(
[0] => 20
[1] => 95
)
all args: Array
(
[0] => 20
[1] => 95
[2] => unexpected
[3] => variables
)
*/
?>
----
Server IP: 203.16.234.19
Probable Submitter: 203.59.28.173
----
Manual Page -- http://www.php.net/manual/en/function.func-get-args.php
Edit -- https://master.php.net/note/edit/77922
Del: integrated -- https://master.php.net/note/delete/77922/integrated
Del: useless -- https://master.php.net/note/delete/77922/useless
Del: bad code -- https://master.php.net/note/delete/77922/bad+code
Del: spam -- https://master.php.net/note/delete/77922/spam
Del: non-english -- https://master.php.net/note/delete/77922/non-english
Del: in docs -- https://master.php.net/note/delete/77922/in+docs
Del: other reasons-- https://master.php.net/note/delete/77922
Reject -- https://master.php.net/note/reject/77922
Search -- https://master.php.net/manage/user-notes.php