overloading_play.phpt

--TEST--
PHP Spec test generated from ./classes/overloading_play.php
--FILE--
<?php

error_reporting(-1);

class PropertyTest
{
    /**  Location for overloaded data.  */
    private $data = array();

    /**  Overloading not used on declared properties.  */
    public $declared = 1;

    /**  Overloading only used on this when accessed outside the class.  */
    private $hidden = 2;

    public function __set($name, $value)
    {
        echo "Setting '$name' to '$value'\n";
        $this->data[$name] = $value;
    }

    public function __get($name)
    {
        echo "Getting '$name'\n";
        if (array_key_exists($name, $this->data)) {
            return $this->data[$name];
        }

        $trace = debug_backtrace();
        trigger_error(
            'Undefined property via __get(): ' . $name .
            ' in ' . $trace[0]['file'] .
            ' on line ' . $trace[0]['line'],
            E_USER_NOTICE);
        return null;
    }

    /**  As of PHP 5.1.0  */
    public function __isset($name)
    {
        echo "Is '$name' set?\n";
        return isset($this->data[$name]);
    }

    /**  As of PHP 5.1.0  */
    public function __unset($name)
    {
        echo "Unsetting '$name'\n";
        unset($this->data[$name]);
    }

    /**  Not a magic method, just here for example.  */
    public function getHidden()
    {
        return $this->hidden;
    }
}

$obj = new PropertyTest;

echo "----------------------\n";

$v = $obj->declared;	// get visible property
echo "declared: $v\n";
$obj->declared = 987;	// set visible property
$v = $obj->declared;	// get visible property
echo "declared: $v\n";

echo "----------------------\n";

$v = $obj->hidden;		// try to get invisible property; can't
						// Runtime sees that hidden exists, but is invisible,
						// so calls __get to search for dynamic property, which fails.
var_dump($v);

echo "----------------------\n";

var_dump(isset($obj->hidden));	// test if hidden exists and is accessible, or is dynamic

echo "----------------------\n";

$obj->hidden = "Hello";	// set dynamic invisible property
$v = $obj->hidden;		// get dynamic invisible property
echo "hidden: $v\n";

echo "----------------------\n";

var_dump(isset($obj->hidden));	// test if hidden exists and is accessible, or is dynamic

echo "----------------------\n";

unset($obj->hidden);
var_dump(isset($obj->hidden));
--EXPECTF--
----------------------
declared: 1
declared: 987
----------------------
Getting 'hidden'

Notice: Undefined property via __get(): hidden in %s on line %d in %s on line %d
NULL
----------------------
Is 'hidden' set?
bool(false)
----------------------
Setting 'hidden' to 'Hello'
Getting 'hidden'
hidden: Hello
----------------------
Is 'hidden' set?
bool(true)
----------------------
Unsetting 'hidden'
Is 'hidden' set?
bool(false)