PHP

Calling itself a static function in php

//https://www.php.net/manual/en/language.oop5.static.php

self::staticMethod();

static class methods php

class MyClass {
  /* Class code here */
  public static function my_static_class_method(/* arguments here */) {
    /* Static Method Code here */
  }
  /* More class code here */
}

php call static method from class

ClassName::functionName();

php call static function from instance

$class = get_class($example);
$class::setData('some', 'data');