Fatal error: Access to undeclared static property: StaticMethod::$a

Question

class StaticMethod
{

public $a=10;

public $b=20;

    public static function sum(){
        return (self::$a+self::$b);
    }
}

echo StaticMethod::sum();

You declared `$a` without `static`. What do you expect? – u_mulder Dec 28 '15 at 18:47 — u_mulder, Dec 28 '15 at 18:47

score 0 · Accepted Answer · answered Dec 28 '15 at 18:48

0

You declared your sum method as static, but you didn't declare your variables $a and $b as static.

class StaticMethod
{
    public static $a = 10;
    public static $b = 20;

    public static function sum() {
        return (self::$a + self::$b);
    }
}

echo StaticMethod::sum(); //returns 30

answered Dec 28 '15 at 18:48

romellem

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what if i want those variable as it is i.e not static. But want to access them in the function sum – Selvesan Malakar Dec 28 '15 at 18:52
You cannot access non-static properties from a static method. See this answer - http://stackoverflow.com/a/15118512/864233 - for more details on that. – romellem Dec 28 '15 at 18:55
Thanks a lot. That solved my problem. :-) – Selvesan Malakar Dec 28 '15 at 19:00

Fatal error: Access to undeclared static property: StaticMethod::$a

1 Answers1