PHP code example of carloswph / gazer

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

carloswph / gazer example snippets

use Gazer\Subject;
use Gazer\Gazer;

A extends Subject {

}
// This is one observer - but you could use the same logic
// for more observers, like classes C or D, for instance
class B extends Gazer {

}

$a = new A();
$b = new B();

// Now, all we need to do for B to "observer" A
// is using the method attach() from A

$a->attach($b);

// Ready! If A uses the method notify(), then a method
// update() in B will be ran, and B gets the A object
// held in the variable $subject, thus...

$a->notify(); // B gets A object immediately

use Gazer\Subject;
use Gazer\Gazer;

$example = 'Observed';

	public function __construct() {

		echo "Subject\n";
	}
}

class B extends Gazer {

	public function info() {

		echo $this->subject->example;
	}

}

$a = new A();
$b = new B();

// The only thing you can see is the word "Subject" echoed
// But now, let's put B to observe A

$a->attach($b);
$a->notify();

// As B is observing and A has notified all observers, so
// now we can manipulate the A object, which has been updated
// and held in the property $subject of B

$b->info(); // Prints "Observed"