note 87311 added to language.references.arent
| From: | reggaedotplayeratcentrumdotcz at osu1 dot php dot net | Date: | Sat, 29 Nov 2008 15:52:17 +0000 |
| Subject: | note 87311 added to language.references.arent | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-147419@lists.php.net to get a copy of this message | ||
I have $scriptVar and $_SESSION['sessionVar'] and I want to bind them together using a
custom SessionManager class. I want to selectively prefer the content of either var upon the
situation - to be able to "link" either $scriptVar to $_SESSION['sessionVar']
(thus override the "content" of $scriptVar with the content of
$_SESSION['sessionVar']) or to link $_SESSION['sessionVar'] to $scriptVar (vice
versa).
But as somebody mentioned here already, PHP's references aren't really references, so the
simplistic way to do this is impossible to use. I came up with the following:
<code>
... class def and other method declarations ...
public static function &linkVar($varName, &$var = null, $overrideSessionValue = false) {
if ($overrideSessionValue === true) {
$_SESSION[$varName] =& $var;
} else {
return $_SESSION[$varName];
}
}
... class def and other method declarations continue ...
</code>
Now, when I want to override the Session value, I simply call the function with three params, first
being the session var name, second being a reference to the $scriptVar and the third a
"true" telling the function to link $_SESSION[$varName] to $var, which links to $scriptVar
and therefore to link $_SESSION[$varName] to $scriptVar. When I want to link it the other way, to
override $scriptVar's value with $_SESSION[$varName] and link them together, I call the
function with only the $varName argument and assign it's output to $scriptVar as a reference.
Tested, working... at least under PHP 5.3.
----
Server IP: 147.32.160.17
Probable Submitter: 62.240.165.30
----
Manual Page -- http://www.php.net/manual/en/language.references.arent.php
Edit -- https://master.php.net/note/edit/87311
Del: integrated -- https://master.php.net/note/delete/87311/integrated
Del: useless -- https://master.php.net/note/delete/87311/useless
Del: bad code -- https://master.php.net/note/delete/87311/bad+code
Del: spam -- https://master.php.net/note/delete/87311/spam
Del: non-english -- https://master.php.net/note/delete/87311/non-english
Del: in docs -- https://master.php.net/note/delete/87311/in+docs
Del: other reasons-- https://master.php.net/note/delete/87311
Reject -- https://master.php.net/note/reject/87311
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