Re: [PHP] extended class question

[Rick Fletcher]

Ed Lazor wrote:
How come the output to this script is "World Trade Center" instead of "Pizza
Delivery"?
Thanks,
Ed
----------------------------------------------------------------
<?php
class test {
        private $var1;
        
        function __construct() {
                $this->var1 = "World Trade Center";
        }
        
        function get_var1() {
                return $this->var1;
        }
        
        function set_var1($data) {
                $this->var1 = $data;
        }
}
class testing extends test {
        function __construct() {
                parent::__construct();
                $this->var1 = "Pizza Delivery";
        }
}
$test2 = new testing();
print "var1 = " . $test2->get_var1() . "<br>";
?>
Because test's var1 is private.
test->var1 isn't accessible by class testing, so the assignment you're 
doing in testing's constructor is assigning "Pizza Delivery" to 
testing->var1 instead.

When you call $test2->get_var1() you're calling the parent's get_var1() 
method, which prints out the parent's var1 property. (which hasn't been 
touched.)

Change test's var1 to protected and it'll work.
--rick
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