ilhamarrouf · February 28, 2017 17:47
diff --git a/object-references.php b/object-references.php
 <?php

 class A 
 {
    public $foo = 1;
 }  

 $a = new A;
 $b = $a;     // $a and $b are copies of the same identifier
         // ($a) = ($b) = <id>

 $b->foo = 2;
 echo $a->foo."\n";

 $c = new A;
 $d = &$c;    // $c and $d are references
         // ($c,$d) = <id>

 $d->foo = 2;
 echo $c->foo."\n";

 ?>

 // Result
 2
 2
	<?php

	class A
	{
	public $foo = 1;
	}

	$a = new A;
	$b = $a; // $a and $b are copies of the same identifier
	// ($a) = ($b) = <id>

	$b->foo = 2;
	echo $a->foo."\n";

	$c = new A;
	$d = &$c; // $c and $d are references
	// ($c,$d) = <id>

	$d->foo = 2;
	echo $c->foo."\n";

	?>

	// Result
	2
	2