php - global variables inside all class functions

Question

What is the best way to get a global variable inside a class?

I know I can easily just use "global $tmpVar;" inside a class function but is there a way to global the variable so it is available for all functions in a class without needing the ugly global $tmpVar; inside each function?

Ideally right after the "class tmpClass() {" declaration would be great, but not sure if this is possible.

Can you add some detail on what you are doing? Because global variables are often not the best/cleanest way to go anyway; alternative suggestions might come up — Pekka
– Pekka, Commented Oct 2, 2010 at 9:26
That's not ideal, that's horrible. The best way (95% of the time) is not to use global variables at all. Be glad you have to use the "ugly" global $var;, it will make it marginally easier to understand WTF the code is doing soon enough. — user395760
– user395760, Commented Oct 2, 2010 at 9:29

Gus · Accepted Answer · 2010-10-02 14:25:34Z

2

You can use Static class variables. These variables are not associated with a class instance, but with the class definition.

class myClass {
    public static $classGlobal = "Default Value" ;

    public function doStuff($inVar) {
        myClass::$classGlobal = $inVar ;
    }
}

echo myClass::$classGlobal."\n" ;
$instance = new myClass() ;
echo myClass::$classGlobal."\n" ;
$instance->doStuff("New Value") ;
echo myClass::$classGlobal."\n" ;

Output:

Default Value
Default Value
New Value

edited Oct 2, 2010 at 14:25

answered Oct 2, 2010 at 9:33

Gus

7,3792 gold badges29 silver badges23 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

php - global variables inside all class functions

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related