In my index.php I’m loading maybe foobarfunc() like this:
foobar::foobarfunc(); // Wrong, it is not static method
but can also be
$foobar = new foobar; // correct $foobar->foobarfunc();
You can not invoke method this way because it is not static method.
foobar::foobarfunc();
You should instead use:
foobar->foobarfunc();
If however you have created a static method something like:
static $foo; // your top variable set as static public static function foo() { return self::$foo; }
then you can use this:
foobar::foobarfunc();
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