--TEST--
PHP Spec test generated from ./functions/byrefs.php
--FILE--
<?php

/*
   +-------------------------------------------------------------+
   | Copyright (c) 2014 Facebook, Inc. (http://www.facebook.com) |
   +-------------------------------------------------------------+
*/

error_reporting(-1);

///*
// create and use byRefs without involving functions

$a = 10;
$b = &$a;		// make $b an alias to $a
//var_dump(&$a);	// Call-time pass-byRefs has been removed
				// & really isn't an operator
//gettype(&$a);	// Call-time pass-byRefs has been removed
var_dump($a);
var_dump($b);
echo "\n";

++$a;			// increment $a/$b to 11
var_dump($a);
var_dump($b);
echo "\n";

$b = -12;		// sets $a/$b to -12
var_dump($a);
var_dump($b);
echo "\n";

$a = "abc";		// sets $a/$b to "abc"
var_dump($a);
var_dump($b);
echo "\n";

$c = -100;
$b = &$c;		// make $b an alias to $c (instead of $a)
var_dump($a);
var_dump($b);
var_dump($c);
echo "\n";

$b = 1234;		// sets $b and $c to 1234
var_dump($a);
var_dump($b);
var_dump($c);
echo "\n";

unset($c);		// removes $c as an alias to $b
var_dump($b);
var_dump($c);
echo "\n";
//*/
///*
// create and use byRefs via the new operator

class C
{
	public $m;
}

unset($a);
var_dump($a);
$a = new C;		// make $a an alias to the allocated object	
//$a = &new C;	// use of & here is deprecated	
var_dump($a);
$a->m = "abc";
var_dump($a);
echo "\n";

$b = &$a;		// make $b an alias to $a
var_dump($a);
var_dump($b);
echo "\n";

$b->m = "xyz";	// change m in $a/$b
var_dump($a);
var_dump($b);
echo "\n";

unset($a);		// removes $a as an alias
var_dump($a);
var_dump($b);
//*/

///*
// pass byRef

function f(&$p)
{
	echo '$p '.(isset($p) ? "is set\n" : "is not set\n");
	echo "f In:  \$p: $p\n";
	$p = 200;		// actual argument's value changed
	echo "f Out: \$p: $p\n\n";
}

$a = 10;
var_dump($a);
f($a);   // change $a from 10 to 200
var_dump($a);
//*/

///*
// return byRef

function &g1(&$p)
{
	echo '$p '.(isset($p) ? "is set\n" : "is not set\n");
	echo "g1 In:  \$p: $p\n";
	$p = 200;		// actual argument's value changed
	echo "g1 Out: \$p: $p\n\n";
	return $p;		// return by reference (can't use & here)
}

$a = 10;
var_dump($a);
$b = &g1($a);   // change $a from 10 to 200; make $b an alias to $a
var_dump($a);
var_dump($b);
$b = -12;		// change $a/$b
var_dump($a);
var_dump($b);
//*/
///*
function &g2()
{
	echo "g2 In:\n";
	$t = "local";
	return $t;		// return byRef
}

$b = &g2();	   // make $b an alias to the dynamic program location formerly aliased by local variable $t
var_dump($b);
//*/
--EXPECTF--
int(10)
int(10)

int(11)
int(11)

int(-12)
int(-12)

string(3) "abc"
string(3) "abc"

string(3) "abc"
int(-100)
int(-100)

string(3) "abc"
int(1234)
int(1234)

int(1234)

Notice: Undefined variable: c in %s/functions/byrefs.php on line 53
NULL


Notice: Undefined variable: a in %s/functions/byrefs.php on line 65
NULL
object(C)#1 (1) {
  ["m"]=>
  NULL
}
object(C)#1 (1) {
  ["m"]=>
  string(3) "abc"
}

object(C)#1 (1) {
  ["m"]=>
  string(3) "abc"
}
object(C)#1 (1) {
  ["m"]=>
  string(3) "abc"
}

object(C)#1 (1) {
  ["m"]=>
  string(3) "xyz"
}
object(C)#1 (1) {
  ["m"]=>
  string(3) "xyz"
}


Notice: Undefined variable: a in %s/functions/byrefs.php on line 84
NULL
object(C)#1 (1) {
  ["m"]=>
  string(3) "xyz"
}
int(10)
$p is set
f In:  $p: 10
f Out: $p: 200

int(200)
int(10)
$p is set
g1 In:  $p: 10
g1 Out: $p: 200

int(200)
int(200)
int(-12)
int(-12)
g2 In:
string(5) "local"