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@ 2015-09-23T11:20:08Z

<?php
class Ancestor {
    public $publicVar = "ancestor's public var\n";
    static $staticVar = "ancestor's static var\n";
    function publicMethod(){
        echo "ancestor's publicMethod ";
        // is $this is set up
        if(isset($this)){
            echo "is in object context\n";
        }else{
            echo "is in static context\n";
        }
    }
    
    static function staticMethod(){
        echo "ancestor's staticMethod ";
        // is $this is set up
        if(isset($this)){
            echo "in object context\n";
        }else{
            echo "in static context\n";
        }
    }
}

class Descendant extends Ancestor {
    public $publicVar = "descendant's public var\n";
    static $staticVar = "descendant's static var\n";
    
    function publicMethod(){
        echo "descendant's publicMethod ";
        // is $this is set up
        if(isset($this)){
            echo "in object context\n";
        }else{
            echo "in static context\n";
        }
    }
    
    static function staticMethod(){
        echo "descendant's staticMethod ";
        // is $this is set up
        if(isset($this)){
            echo "in object context\n";
        }else{
            echo "in static context\n";
        }
    }
}

$ancestor = new Ancestor();
$descendant = new Descendant();

// From Outside Of An Instance/Class:
    // access to properties
        echo $descendant->publicVar; // descendant's public var
        //echo $descendant->staticVar; // "" + notice: Undefined property: Descendant::$staticVar
        echo $descendant::$staticVar; // descendant's static var
        //echo $descendant::$publicVar; // fatal error: Access to undeclared static property: Descendant::$publicVar 
        
        //echo Ancestor::$publicVar; // fatal error: Access to undeclared static property
        echo Ancestor::$staticVar; //ancestor's static var
        //echo Descendant::$publicVar; // fatal error: Access to undeclared static property
        echo Descendant::$staticVar; // descendant's static var
    
    // access to methods
        $descendant->publicMethod();
        $descendant->staticMethod();
        $descendant::staticMethod();
        $descendant::publicMethod();

//Ancestor::publicMethod();

Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: descendant's public var descendant's static var ancestor's static var descendant's static var descendant's publicMethod in object context descendant's staticMethod in static context descendant's staticMethod in static context Fatal error: Uncaught Error: Non-static method Descendant::publicMethod() cannot be called statically in /in/B4XIT:70 Stack trace: #0 {main} thrown in /in/B4XIT on line 70
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33: descendant's public var descendant's static var ancestor's static var descendant's static var descendant's publicMethod in object context descendant's staticMethod in static context descendant's staticMethod in static context Deprecated: Non-static method Descendant::publicMethod() should not be called statically in /in/B4XIT on line 70 descendant's publicMethod in static context
Output for 7.3.32 - 7.3.33: descendant's public var descendant's static var ancestor's static var descendant's static var descendant's publicMethod in object context descendant's staticMethod in static context descendant's staticMethod in static context descendant's publicMethod in static context
Output for 5.4.1 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28: descendant's public var descendant's static var ancestor's static var descendant's static var descendant's publicMethod in object context descendant's staticMethod in static context descendant's staticMethod in static context Strict Standards: Non-static method Descendant::publicMethod() should not be called statically in /in/B4XIT on line 70 descendant's publicMethod in static context

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