the fact that you think that it might even be possible that doing
myClass::showVar() would cause $this in showVar() to refer to $obj
suggests that you don't understand [to some degree] either classes,
objects and/or scope (or at least how its implemented/applied in php).
No Jochem, I may have not been clear with the phrasing of my
question. To simplify, my question was focusing on the scope of
"$this". When calling a method via "::" syntax within an outside
function, how does that affect the scope of $this (within the class).
I appreciate you taking the time to respond to my question.
- MD
...................................................................
Mike Dunlop
Director of Technology Development
[ e ] miked@xxxxxxxxx
[ p ] 323.644.7808
On Mar 15, 2006, at 1:17 PM, Jochem Maas wrote:
Mike Dunlop wrote:
Hi Guys,
I am wondering how to be able to call a class variable from within
an outside function using the "::" syntax: See an example of the
logic I am using below:
class myClass {
var $variable = 1;
// this works in php4.
<?php
class myClass { function showVar($key = null) {
static $defvar = "default",
$vars = array(
"a"=>1,"b"=>2,"c"=>3
);
if (empty($key)) {
return $defvar;
} else if (isset($vars[$key])) {
return $vars[$key];
}
}}
function extFunction() {
return myClass::showVar();
}
echo extFunction(),"\n",
myClass::showVar("a"),"\n",
myClass::showVar("b"),"\n",
myClass::showVar("c"),"\n";
?>
}
$obj = new myClass;
function extFunction() {
return myClass::showVar();
}
I am assuming this isn't working because by calling
myClass::showVar ()
don't assume - run the code and find out :-)
the fact that you think that it might even be possible that doing
myClass::showVar() would cause $this in showVar() to refer to $obj
suggests that you don't understand [to some degree] either classes,
objects and/or scope (or at least how its implemented/applied in php).
instead of $obj->showVar() "$this" would be undefined...does
anyone know how to workaround this (e.g. direct access to a
variable via "::"
it's hard to define a workaround if we don't know what your trying
to achieve and why('why' often speaks volumes :-).
syntax like myClass::variable). Does PHP5 address this at all?
yup. :-) please install php5 straight away :-P
php -r '
class T { private static $U = "V"; static function W() { return
self::$U; } }
echo T::W(),"\n";
'
now start reading here, plenty of nice OO features that blow
php4 out of the water in that context:
http://php.net/php5
Many thanks on this.
Best,
Mike D
...................................................................
Mike Dunlop
Director of Technology Development
[ e ] miked@xxxxxxxxx
[ p ] 323.644.7808
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