[UPHPU] Child class references static variable of parent instead of its own

[Richard K Miller]

Here's an OOP question that perplexes me. It seems PHP doesn't treat  
static variables correctly in child classes.

<?php
        class ABC {
                public $regular_variable = "Regular variable in ABC\n";
                public static $static_variable = "Static variable in ABC\n";
        
                public function regular_function() {
                        echo $this->regular_variable;
                }
                
                public static function static_function() {
                        echo self::$static_variable;
                }
        }
        class DEF extends ABC {
                public $regular_variable = "Regular variable in DEF\n";
                public static $static_variable = "Static variable in DEF\n";
        }

        $abc = new ABC();
        $abc->regular_function();
        ABC::static_function();

        $def = new DEF();
        $def->regular_function();
        DEF::static_function();
?>

WHAT I EXPECTED:
Regular variable in ABC
Static variable in ABC
Regular variable in DEF
Static variable in DEF

ACTUAL OUTPUT:
Regular variable in ABC
Static variable in ABC
Regular variable in DEF
Static variable in ABC <--- This is different from what I expected

Anyone know why?

Richard



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