Static Call
A static call is a call to a structure, where the name of the structure is hardcoded.
A static method may be called with a static call, or with a dynamic call. Both are valid.
<?php
class Elephpant {
static function trumpet() {}
}
new Elephpant(); // static call
$class = Elephpant::class;
new $class(); // dynamic call
Elephpant::trumpet(); // static call of a static method
$class::trumpet(); // dynamic call of a static method
?>