Key features in php 5.6

1. What’s new
PHP 5.6

2. Hello!!!
(New features
&& functions)

3. Constant scalar expressions

4. const ONE = 1;
const TWO = ONE * 2;
echo ONE; // 1
echo TWO; // 2

5. class C {
const THREE = TWO + 1;
const ONE_THIRD = ONE / self::THREE;
const SENTENCE = 'The value of THREE is
'.self::THREE;
public function f($a = ONE + self::THREE) {
return $a;
}
}
echo (new C)->f(); //4
echo C::SENTENCE; //The value of THREE is 3

6. Variadic functions via …
&&
Argument unpacking via ...

7. function ides() {
$cant = func_num_args();
echo "Ides count: ".$cant;
}
ides('Eclipse', 'Netbeas');
// Ides count 2
Before

8. function ides($ide, ...$ides) {
echo "Ides count: ".count($ides);
}
ides (
'Eclipse', 'Netbeas', 'Sublime'
);
// Ides count 2
Now

9. function sum(...$numbers) {
$acc = 0;
foreach ($numbers as $n) {
$acc += $n;
}
return $acc;
}
echo sum(1, 2, 3, 4); // 10

10. function add($a, $b) {
return $a + $b;
}
echo add(...[1, 2]); // 3
$a = [1, 2];
echo add(...$a); // 3

11. function showNames($welcome, Person ...$people) {
echo $welcome.PHP_EOL;
foreach ($people as $person) {
echo $person->name.PHP_EOL;
}
}
$a = new Person('Federico');
$b = new Person('Damian');
showNames('Welcome: ', $a, $b);
//Welcome:
//Federico
//Damian

12. Exponentiation via **

13. printf("2 ** 3 == %dn", 2 ** 3);
printf("2 ** 3 ** 2 == %dn", 2 ** 3 ** 2);
$a = 2;
$a **= 3;
printf("a == %dn", $a);
// 2 ** 3 == 8
// 2 ** 3 ** 2 == 512
// a == 8

14. use function & use const

15. namespace NameSpace {
const FOO = 42;
function f() { echo __FUNCTION__."n"; }
}
namespace {
use const NameSpaceFOO;
use function NameSpacef;
echo FOO."n"; // 42
f(); // NameSpacef
}

16. __debugInfo()

17. class C {
private $prop;
public function __construct($val) {
$this->prop = $val;
}
public function __debugInfo() {
return [
'propSquared' => $this->prop ** 2
];
}
}

18. var_dump(new C(42));
object(C)#1 (1) {
["propSquared"]=> int(1764)
}

19. default character encoding

20. htmlentities()
html_entity_decode()
htmlspecialchars()
< 5.4
ISO-8859-1
5.4 - 5.5
UTF-8
>= 5.6
default_charset is used

21. Others features
&&
functions

22. Large File Upload
It is possible to upload a file larger than 2 GB
php://input is reusable
phpdbg

23. Hash
- hash_equals()
LDAP
- ldap_escape()
- ldap_modify_batch()
Mysqli
- mysqli_get_links_stats()
PostgreSQL
- pg_connect_poll()
- ...
OCI8
- oci_get_implicit_resulset()
OpenSSL
- openssl_get_cert_location()
- openssl_x509_fingerprint()
- openssl_spki_new()
- …
Session
- session_abort()
- session_reset()

24. Sorry
I'm different
(backward incompatible changes & deprecates)

25. json_decode() strictness

26. $json_data = json_decode('tRue');
var_dump($json_data);
var_dump(json_last_error_msg());
bool(true)
string(8) "No error"
Before
NULL
string(12) "Syntax error"
Now

27. Array Values and Overwriting

28. class helloWorld {
const ONE = 1;
public $array = [
self::ONE => 'Eclipse',
'Sublime',
'PHPStorm',
];
}
$hello = new helloWorld();
print_r($hello);

29. helloWorld Object
(
[array] => Array
(
[0] => Sublime
[1] => PHPStorm
)
)
helloWorld Object
(
[array] => Array
(
[1] => Eclipse
[2] => Sublime
[3] => PHPStorm
)
)
Before Now

30. Calls from incompatible context

31. class A {
function f() { echo
get_class($this); }
}
class B {
function f() { A::f(); }
}
(new B)->f();
//output
PHP Deprecated: Non-static method A::f() should not be called
statically, assuming $this from incompatible context in ...

32. HTTP_RAW_POST_DATA
always_populate_raw_post_data

33. Questions