The document outlines the changes and new features introduced in PHP 7 compared to PHP 5, including improvements in error handling, the introduction of throwable errors, and modifications to existing functionalities. It highlights specific code examples illustrating the differences in error outputs and behaviors between PHP 5 and PHP 7, as well as deprecated functions and new features such as nullable types and multi-catch exception handling. The document concludes with a preview of upcoming features in PHP 7.1.

1. GETTING HANDS DIRTY

2. MICHELANGELO VAN DAM
PHP CONSULTANT & COMMUNITY LEADER
Credits: phpbg on flickr.com

3. AGENDA
WHAT HAS CHANGED SINCE PHP 5?
WHAT’S NEW IN PHP 7?
OTHER THINGS YOU NEED TO KNOW
MIGRATING PHP 5 APPS TO PHP 7
CLOSING REMARKS & QUESTIONS

4. AGENDA
WHAT HAS CHANGED SINCE PHP 5?
WHAT’S NEW IN PHP 7?
OTHER THINGS YOU NEED TO KNOW
MIGRATING PHP 5 APPS TO PHP 7
CLOSING REMARKS & QUESTIONS

5. BC BREAK
CHANGED BEHAVIOR IN PHP 7
Source: Hernán Piñera on flickr.com

6. FATAL ERRORS
๏ Fatal and recoverable fatal errors are now “Throwable”
๏ These errors inherit from “Error” class
๏ The “Errors” class is on the same level as ExcepFon class
๏ Both “Errors” and “ExcepFons” implement “Throwable”
interface
๏ Has an effect on:
๏ “set_excepFon_handler”: can receive Errors and ExcepFons
๏ all internal classes now throw ExcepFon on construct failure
๏ Parse errors now throw “ParseError”

7. EXAMPLE ERROR PHP 5 VS 7
<?php
$example = new Example();
// PHP 5 error outputs:
// PHP Fatal error: Class 'Example' not found in php7-workshop/errors.php on line 4
// PHP Stack trace:
// PHP 1. {main}() php7-workshop/errors.php:0
// PHP 7 error outputs:
// PHP Fatal error: Uncaught Error: Class 'Example' not found in php7-workshop/errors.php:4
// Stack trace:
// #0 {main}
// thrown in php7-workshop/errors.php on line 4
//
// Fatal error: Uncaught Error: Class 'Example' not found in php7-workshop/errors.php on line 4
//
// Error: Class 'Example' not found in php7-workshop/errors.php on line 4
//
// Call Stack:
// 0.0003 351648 1. {main}() php7-workshop/errors.php:0

8. EXCEPTION HANDLING
<?php
function exceptionHandler(Exception $e) {
echo 'PHP ' . phpversion() . PHP_EOL;
echo $e->getMessage() . PHP_EOL;
echo $e->getTraceAsString() . PHP_EOL;
}
set_exception_handler('exceptionHandler');
class Foo
{
public function bar()
{
throw new Exception('foo-bar');
}
}
$foo = new Foo();
$foo->bar();
// PHP 5.6.4
// foo-bar
// #0 php7-workshop/Errors/errorhandler.php(24): Foo->bar()
// #1 {main}
// PHP 7.0.2
// foo-bar
// #0 php7-workshop/Errors/errorhandler.php(24): Foo->bar()
// #1 {main}

9. THROWABLE EXAMPLE
<?php
echo 'PHP ' . phpversion() . PHP_EOL;
try {
$foo = new foo();
} catch (Exception $e) {
echo 'I am an exception: ' . $e->getMessage() . PHP_EOL;
} catch (Error $e) {
echo 'I am an error: ' . $e->getMessage() . PHP_EOL;
} catch (Throwable $t) {
echo 'I am throwable: ' . $t->getMessage() . PHP_EOL;
}
// PHP 5.6.4
// Fatal error: Class 'foo' not found in
// php7-workshop/Errors/throwable.php on line 5
// PHP 7.0.2
// I am an error: Class 'foo' not found

10. VARIABLE VARIABLES
<?php
echo 'PHP ' . phpversion() . PHP_EOL;
$foo = [
'bar' => [
'baz' => 'foo-bar-baz',
'bay' => 'foo-bar-bay',
],
];
echo $foo['bar']['baz'] . PHP_EOL;
$foo = new stdClass();
$foo->bar = ['baz' => 'foo-bar-baz'];
$bar = 'bar';
echo $foo->$bar['baz'] . PHP_EOL;
// PHP 5.6.4
// foo-bar-baz
//
// Warning: Illegal string offset 'baz' in php7-workshop/Variable/
vars.php on line 15
// PHP 7.0.2
// foo-bar-baz
// foo-bar-baz

11. GLOBALS
<?php
echo 'PHP ' . phpversion() . PHP_EOL;
$a = 'Hello';
$$a = 'World!';
function foo()
{
global $a, $$a;
return $a . ' ' . $$a;
}
echo foo() . PHP_EOL;
// PHP 5.6.4
// Hello World!
// PHP 7.0.2
// Hello World!

12. GLOBALS (CONT.)
<?php
echo 'PHP ' . phpversion() . PHP_EOL;
$a = 'Hello';
$$a = 'World!';
function foo()
{
global $a, ${$a};
return $a . ' ' . ${$a};
}
echo foo() . PHP_EOL;
// PHP 5.6.4
// Hello World!
// PHP 7.0.2
// Hello World!

13. LIST ORDER
<?php
list ($a[], $a[], $a[]) = [1, 2, 3];
echo 'PHP ' . phpversion() . ': ' . implode(', ', $a) . PHP_EOL;
// PHP 5.6.4: 3, 2, 1
// PHP 7.0.2: 1, 2, 3
list ($b[], $b[], $b[]) = [3, 2, 1];
echo 'PHP ' . phpversion() . ': ' . implode(', ', $b) . PHP_EOL;
// PHP 5.6.4: 1, 2, 3
// PHP 7.0.2: 3, 2, 1

14. FOREACH INTERNAL POINTER
<?php
echo 'PHP ' . phpversion() . PHP_EOL;
$a = [0, 1, 2];
foreach ($a as &$val) {
var_dump(current($a));
}
// PHP 5.6.4
// int(1)
// int(2)
// bool(false)
// PHP 7.0.2
// int(0)
// int(0)
// int(0)

15. FOREACH ITERATION ISSUE
<?php
echo 'PHP ' . phpversion() . PHP_EOL;
$a = ['a', 'b', 'c'];
foreach ($a as &$item) {
echo current($a) . PHP_EOL;
// When we reach the end, close with double newline
if (false === current($a)) {
echo PHP_EOL . PHP_EOL;
}
}
echo 'Hello World!' . PHP_EOL;
// PHP 5.6.4
// b
// c
//
//
//
// Hello World!
// PHP 7.0.2
// a
// a
// a
// Hello World!

16. INVALID OCTALS
<?php
echo 'PHP ' . phpversion() . PHP_EOL;
$a = 0128; // faulty octal
var_dump($a);
// PHP 5.6.4
// int(10) -> PHP converted it to 012
// PHP 7.0.2
//
// Parse error: Invalid numeric literal in
// php7-workshop/Octals/Octals.php on line 4

17. NEGATIVE BITSHIFTS
<?php
echo 'PHP ' . phpversion() . PHP_EOL;
var_dump(1 >> -1);
// PHP 5.6.4
// int(0)
// PHP 7.0.2
// PHP Fatal error: Uncaught ArithmeticError: Bit shift by
// negative number in php7-workshop/Bitshift/bitshift.php:4
// Stack trace:
// #0 {main}
// thrown in php7-workshop/Bitshift/bitshift.php on line 4
//
// Fatal error: Uncaught ArithmeticError: Bit shift by negative
// number in php7-workshop/Bitshift/bitshift.php on line 4
//
// ArithmeticError: Bit shift by negative number in
// php7-workshop/Bitshift/bitshift.php on line 4
//
// Call Stack:
// 0.0006 352104 1. {main}() php7-workshop/Bitshift/bitshift.php:0

18. BITSHIFT OVERFLOW
<?php
echo 'PHP ' . phpversion() . PHP_EOL;
$a = 0b11111111111111111111111111111111111111111111111111111111111111111111111111111
1111111111111111111111111111111111111111;
echo var_export($a >> 1, true) . PHP_EOL;
// PHP 5.3.29
// Parse error: syntax error, unexpected T_STRING in php7-workshop/Bitshift/
outofrangebit.php on line 3
// PHP 5.6.4
// 0
// PHP 7.0.2
// 0

19. DIVISION BY ZERO
<?php
echo 'PHP ' . phpversion() . PHP_EOL;
echo (0 / 0) . PHP_EOL;
echo (3 / 0) . PHP_EOL;
echo (3 / 0) . PHP_EOL;
// PHP 5.6.4
//
// Warning: Division by zero in php7-workshop/Zero/division.php on line 5
// Warning: Division by zero in php7-workshop/Zero/division.php on line 6
// Warning: Division by zero in php7-workshop/Zero/division.php on line 7
// PHP 7.0.2
// Warning: Division by zero in php7-workshop/Zero/division.php on line 5
// NAN
// Warning: Division by zero in php7-workshop/Zero/division.php on line 6
// INF
// Warning: Division by zero in php7-workshop/Zero/division.php on line 7
// INF

20. HEX VALUES
<?php
echo 'PHP ' . phpversion() . PHP_EOL;
var_dump("0x123" == "291");
var_dump(is_numeric("0x123"));
var_dump("0xe" + "0x1");
var_dump(substr("foo", "0x1"));
// PHP 5.6.4
// bool(true)
// bool(true)
// int(15)
// string(2) "oo"
// PHP 7.0.2
// bool(false)
// bool(false)
// int(0)
//
// Notice: A non well formed numeric value encountered
// in php7-workshop/Hex/hex.php on line 8
// string(3) "foo"

21. REMOVED FROM PHP 7
๏ call_user_*
๏ call_user_method() -> call_user_func()
๏ call_user_method_array() -> call_user_func_array()
๏ mcrypt_*
๏ mcrypt_generic_end() -> mcrypt_generic_deinit()
๏ mcrypt_ecb() -> mcrypt_decrypt()
๏ mcrypt_cbc() -> mcrypt_decrypt()
๏ mcrypt_cP() -> mcrypt_decrypt()
๏ mcrypt_oP() -> mcrypt_decrypt()
๏ datefmt_set_Fmezone_id() -> datefmt_set_Fmezone()
๏ IntlDateFormaTer::setTimeZoneID() -> IntlDateFormaTer::setTimeZone()
๏ set_magic_quotes_runFme()
๏ set_socket_blocking() -> stream_set_blocking()

22. REMOVED GD FUNCTIONS
๏ imagepsbbox()
๏ imagepsencodefont()
๏ imagepsextendfont()
๏ imagepsfreefont()
๏ imagepsloadfont()
๏ imagepsslanWont()
๏ imagepstext()

23. EXT/MYSQL
๏ Deprecated in PHP 5.5
๏ Removed in PHP 7
๏ All mysql_* funcFons!!!

24. WILL YOU MISS IT?!?
๏ script-tag
<script language="php">
// PHP code goes here
</script>
๏ ASP-tag
<%
// PHP code goes here
%>
<%= 'echoing something here' %>

25. OTHER REMOVED/CHANGED ITEMS
๏ php.ini
๏ always_populate_raw_post_data
๏ asp_tags
๏ xsl.security_prefs
๏ $HTTP_RAW_POST_DATA -> php://input
๏ No # in INI files with parse_ini_file() or parse_ini_string() -> use ;
๏ func_get_arg() and func_get_args() return always current value of
arguments (no longer original values)

26. AGENDA
WHAT HAS CHANGED SINCE PHP 5?
WHAT’S NEW IN PHP 7?
OTHER THINGS YOU NEED TO KNOW
MIGRATING PHP 5 APPS TO PHP 7
CLOSING REMARKS & QUESTIONS

28. PHP 7.1 - WHAT’S COMING

29. NEW FEATURES…

30. NULLABLE TYPE
<?php
class Foo
{
protected $bar;
public function __construct(string $bar = null)
{
if (null !== $bar) {
$this->bar = $bar;
}
}
public function getBar(): string
{
return $this->bar;
}
}
$foo = new Foo();
$bar = $foo->getBar();
var_dump($bar);

32. NULLABLE TYPE
<?php
class Foo
{
protected $bar;
public function __construct(?string $bar = null)
{
if (null !== $bar) {
$this->bar = $bar;
}
}
public function getBar(): ?string
{
return $this->bar;
}
}
$foo = new Foo();
$bar = $foo->getBar();
var_dump($bar);

33. VOID FUNCTIONS
<?php
class Foo
{
public function sayHello(string $message): void
{
echo 'Hello ' . $message . '!' . PHP_EOL;
}
}
$foo = new Foo();
$foo->sayHello('World');

34. SYMMETRIC ARRAY DESTRUCTURING
<?php
$talks = [
[1, 'Getting hands dirty with PHP7'],
[2, 'Decouple your framework'],
[3, 'PHPunit speedup with Docker'],
[4, 'Open source your business for success'],
];
// short-hand list notation
[$id, $title] = $talks[0];
echo sprintf('%s (%d)', $title, $id) . PHP_EOL;
echo PHP_EOL;
// shorthand foreach list notation
foreach ($talks as [$id, $title]) {
echo sprintf('%s (%d)', $title, $id) . PHP_EOL;
}

35. SUPPORT FOR KEYS IN LIST()
<?php
$talks = [
[1, 'Getting hands dirty with PHP7'],
[2, 'Decouple your framework'],
[3, 'PHPunit speedup with Docker'],
[4, 'Open source your business for success'],
];
// short-hand list notation
['id' => $id, 'title' => $title] = $talks[0];
echo sprintf('%s (%d)', $title, $id) . PHP_EOL;
echo PHP_EOL;
// shorthand foreach list notation
foreach ($talks as ['id' => $id, 'title' => $title]) {
echo sprintf('%s (%d)', $title, $id) . PHP_EOL;
}

36. CLASS CONSTANT VISIBILITY
<?php
class ConstDemo
{
const PUBLIC_CONST_A = 1;
public const PUBLIC_CONST_B = 2;
protected const PROTECTED_CONST = 3;
private const PRIVATE_CONST = 4;
}

37. ITERABLE PSEUDO-TYPE
<?php
function iterator(iterable $iterable)
{
foreach ($iterable as $value) {
//
}
}

38. MULTI CATCH EXCEPTION HANDLING
<?php
try {
// some code
} catch (FirstException | SecondException $e) {
// handle first and second exceptions
}

39. SUPPORT FOR NEGATIVE STRING OFFSETS
<?php
$string = 'ThisIsALongString.php';
echo substr($string, 0, strlen($string) - 4) . PHP_EOL;
// Outputs: ThisIsALongString
echo substr($string, 0, -4) . PHP_EOL;
// Outputs: ThisIsALongString

40. CONVERT CALLABLES TO CLOSURES WITH
CLOSURE::FROMCALLABLE()
<?php
class Test
{
public function exposeFunction()
{
return Closure::fromCallable([$this, 'privateFunction']);
}
private function privateFunction($param)
{
var_dump($param);
}
}
$privFunc = (new Test)->exposeFunction();
$privFunc('some value');

41. ASYNCHRONOUS SIGNAL HANDLING
<?php
pcntl_async_signals(true); // turn on async signals
pcntl_signal(SIGHUP, function($sig) {
echo "SIGHUPn";
});
posix_kill(posix_getpid(), SIGHUP);

42. HTTP/2 SERVER PUSH SUPPORT IN EXT/CURL
๏ CURLMOPT_PUSHFUNCTION
๏ CURL_PUSH_OK
๏ CURL_PUSH_DENY

43. PHP 7.1: THE NEW STUFF

44. NEW FUNCTIONS
๏ Closure
๏ Closure::fromCallable()
๏ CURL
๏ curl_mulF_errno()
๏ curl_share_errno()
๏ curl_share_strerror()
๏ SPL
๏ is_iterable()
๏ PCNTL
๏ pcntl_async_signals()

45. NEW GLOBAL CONSTANTS
๏ Core Predefined Constants
๏ PHP_FD_SETSIZE
๏ CURL
๏ CURLMOPT_PUSHFUNCTION
๏ CURL_PUST_OK
๏ CURL_PUSH_DENY
๏ Data Filtering
๏ FILTER_FLAG_EMAIL_UNICODE
๏ JSON
๏ JSON_UNESCAPED_LINE_TERMINATORS

46. NEW GLOBAL CONSTANTS (2)
๏ PostgreSQL
๏ PGSQL_NOTICE_LAST
๏ PGSQL_NOTICE_ALL
๏ PGSQL_NOTICE_CLEAR
๏ SPL
๏ MT_RAND_PHP

47. NEW GLOBAL CONSTANTS (3)
๏ LDAP_OPT_X_SASL_NOCANON
๏ LDAP_OPT_X_SASL_USERNAME
๏ LDAP_OPT_X_TLS_CACERTDIR
๏ LDAP_OPT_X_TLS_CACERTFILE
๏ LDAP_OPT_X_TLS_CERTFILE
๏ LDAP_OPT_X_TLS_CIPHER_SUITE
๏ LDAP_OPT_X_TLS_KEYFILE
๏ LDAP_OPT_X_TLS_RANDOM_FILE
๏ LDAP_OPT_X_TLS_CRLCHECK
๏ LDAP_OPT_X_TLS_CRL_NONE
๏ LDAP_OPT_X_TLS_CRL_PEER
๏ LDAP_OPT_X_TLS_CRL_ALL
๏ LDAP_OPT_X_TLS_DHFILE
๏ LDAP_OPT_X_TLS_CRLFILE
๏ LDAP_OPT_X_TLS_PROTOCOL_MIN
๏ LDAP_OPT_X_TLS_PROTOCOL_SSL2
๏ LDAP_OPT_X_TLS_PROTOCOL_SSL3
๏ LDAP_OPT_X_TLS_PROTOCOL_TLS1_0
๏ LDAP_OPT_X_TLS_PROTOCOL_TLS1_1
๏ LDAP_OPT_X_TLS_PROTOCOL_TLS1_2
๏ LDAP_OPT_X_TLS_PACKAGE
๏ LDAP_OPT_X_KEEPALIVE_IDLE
๏ LDAP_OPT_X_KEEPALIVE_PROBES
๏ LDAP_OPT_X_KEEPALIVE_INTERVAL

48. BREAKING BC

49. THESE MIGHT BREAK STUFF
๏ Throw on passing too few funcFon arguments
๏ Forbid dynamic calls to scope introspecFon funcFons
๏ Invalid class, interface, and trait names
๏ void
๏ iterable
๏ Numerical string conversions now respect scienFfic notaFon
๏ Fixes to mt_rand() algorithm
๏ rand() aliased to mt_rand() and srand() aliased to mt_srand()
๏ Disallow the ASCII delete control character (0x7F) in idenFfiers
๏ error_log changes with syslog error values

50. THESE MIGHT BREAK STUFF (2)
๏ Do not call destructors on incomplete objects
๏ call_user_func() handling of reference arguments
๏ The empty index operator is not supported for strings anymore
๏ $str[] = $x throws a fatal error
๏ Removed ini direcFves
๏ session.entropy_file
๏ session.entropy_length
๏ session.hash_funcFon
๏ session.hash_bits_per_character

51. DEPRECATED FEATURES

52. THESE ARE NOW DEPRECATED
๏ ext/mcrypt
๏ Eval opFon for mb_ereg_replace() and mb_eregi_replace()

53. CHANGED FUNCTIONS

54. PHP CORE
๏ getopt() has an opFonal third parameter that exposes the index of the next
element in the argument vector list to be processed. This is done via a by-
ref parameter.
๏ getenv() no longer requires its parameter. If the parameter is omiTed, then
the current environment variables will be returned as an associaFve array.
๏ get_headers() now has an addiFonal parameter to enable for the passing of
custom stream contexts.
๏ long2ip() now also accepts an integer as a parameter.
๏ output_reset_rewrite_vars() no longer resets session URL rewrite variables.
๏ parse_url() is now more restricFve and supports RFC3986.
๏ unpack() now accepts an opFonal third parameter to specify the offset to
begin unpacking from.

55. OTHER CHANGED FUNCTIONS
๏ File System
๏ tempnam() now emits a noFce when falling back to the system's temp
directory.
๏ JSON
๏ json_encode() now accepts a new opFon,
JSON_UNESCAPED_LINE_TERMINATORS, to disable the escaping of U+2028
and U+2029 characters when JSON_UNESCAPED_UNICODE is supplied.
๏ MulTbyte String
๏ mb_ereg() now rejects illegal byte sequences.
๏ mb_ereg_replace() now rejects illegal byte sequences.
๏ PDO
๏ PDO::lastInsertId() for PostgreSQL will now trigger an error when nextval
has not been called for the current session (the postgres connecFon).

56. POSTGRESQL
๏ pg_last_noFce() now accepts an opFonal parameter to specify an
operaFon. This can be done with one of the following new
constants: PGSQL_NOTICE_LAST, PGSQL_NOTICE_ALL, or
PGSQL_NOTICE_CLEAR.
๏ pg_fetch_all() now accepts an opFonal second parameter to
specify the result type (similar to the third parameter of
pg_fetch_array()).
๏ pg_select() now accepts an opFonal fourth parameter to specify
the result type (similar to the third parameter of pg_fetch_array()).

57. OTHER CHANGES

58. OTHER CHANGES
๏ NoFces and warnings on arithmeFc with invalid strings
๏ New E_WARNING and E_NOTICE errors have been introduced
when invalid strings are coerced using operators expecFng
numbers
๏ E_NOTICE is emiTed when the string begins with a numeric
value but contains trailing non-numeric characters
๏ E_WARNING is emiTed when the string does not contain a
numeric value
๏ Warn on octal escape sequence overflow
๏ Inconsistency fixes to $this
๏ Session ID generaFon without hashing

59. AGENDA
WHAT HAS CHANGED SINCE PHP 5?
WHAT’S NEW IN PHP 7?
OTHER THINGS YOU NEED TO KNOW
MIGRATING PHP 5 APPS TO PHP 7
CLOSING REMARKS & QUESTIONS

60. OTHER THINGS THAT CHANGED
๏ FuncFon “set_excepFon_handler()” is no longer guaranteed to
receive ExcepTon objects but Throwable objects
๏ Error reporFng E_STRICT noFces severity changes as some have
been changed and will not trigger an error
๏ The deprecated “set_socket_blocking()” alias has been removed in
favour of “stream_set_blocking()”
๏ Switch statements cannot have mulFple default blocks
๏ FuncFons cannot have mulFple parameters with the same name
๏ PHP funcFons “func_get_arg()” and “func_get_args()” now return
current argument values

61. PHP 7 PERFORMANCE

62. PERFORMANCE
WORDPRESS
Source: Zend PHP 7 Infograph

63. PERFORMANCE
MAGENTO
Source: Zend PHP 7 Infograph

64. PERFORMANCE
WORDPRESS
Source: Zend PHP 7 Infograph

65. PERFORMANCE
FRAMEWORKS
Source: Zend PHP 7 Infograph

66. PERFORMANCE
CRM
Source: Zend PHP 7 Infograph

67. PERFORMANCE
COMPARISON TO OTHER LANGUAGES
Source: Zend PHP 7 Infograph

68. PERFORMANCE
YII FRAMEWORK
Source: caleblloyd.com

69. AGENDA
WHAT HAS CHANGED SINCE PHP 5?
WHAT’S NEW IN PHP 7?
OTHER THINGS YOU NEED TO KNOW
MIGRATING PHP 5 APPS TO PHP 7
CLOSING REMARKS & QUESTIONS

70. DOMAIN MODELS

71. DOMAIN MODELS
<?php
namespace DragonBephp7workshop;
class User
{
/** @var string $name The Name of the User */
protected $name;
/** @var int $age The age of the User */
protected $age;
/**
* User constructor.
*
* @param string $name The name of the User
* @param int $age The age of the User
*/
public function __construct($name = '', $age = 0)
{
$this->setName($name)
->setAge($age);
}
/**
* Sets the name of the User
*
* @param string $name The name of the User
* @return User
*/
public function setName($name)
{
$this->name = (string) $name;
return $this;
}
/**
* Retrieve the name of the User
*
* @return string
*/
public function getName()
{
return $this->name;
}
/**
* Sets the age of the User
*
* @param int $age
* @return User
*/
public function setAge($age)
{
$this->age = (int) $age;
return $this;
}
/**
* Retrieve the age of the User
* @return int
*/
public function getAge()
{
return $this->age;
}
}

72. DOMAIN MODELS (CONT.)
<?php
namespace DragonBephp7workshop;
class User
{
/** @var string $name The Name of the User */
protected $name;
/** @var int $age The age of the User */
protected $age;
/**
* User constructor.
*
* @param string $name The name of the User
* @param int $age The age of the User
* @throws TypeError
*/
public function __construct(string $name = '', int $age = 0)
{
$this->setName($name)
->setAge($age);
}
}

73. DOMAIN MODELS (CONT.)
/**
* Sets the name of the User
*
* @param string $name The name of the User
* @return User
*/
public function setName(string $name): User
{
$this->name = $name;
return $this;
}
/**
* Retrieve the name of the User
*
* @return string
*/
public function getName(): string
{
return $this->name;
}
/**
* Sets the age of the User
*
* @param int $age
* @return User
*/
public function setAge(int $age): User
{
$this->age = $age;
return $this;
}
/**
* Retrieve the age of the User
* @return int
*/
public function getAge(): int
{
return $this->age;
}

74. DOMAIN MODELS (CONT.)
<?php
declare(strict_types=1);
require_once __DIR__ . '/User.php';
use DragonBephp7workshopUser;
$user = new User('michelangelo', '39');
var_dump($user);

76. MYSQL EXTENSION

77. S/MYSQL_/MYSQLI_
๏ On bash you could grep -r mysql_ * in your project’s root
directory to discover files sFll using old mysql elements
๏ Use your IDE and search for “mysql_”
๏ Most of the Fme you can just replace “mysql_” with “mysqli_”

78. INCOMPATIBLE MYSQL_ FUNC.
๏ mysql_client_encoding()
๏ mysql_list_dbs() (use SHOW DATABASES query)
๏ mysql_db_name()
๏ mysql_list_fields()
๏ mysql_db_query()
๏ mysql_list_processes() (use SHOW PROCESSLIST
query)
๏ mysql_dbname()
๏ mysql_list_tables() (use SHOW TABLES query)
๏ mysql_field_flags()
๏ mysql_listdbs() (use SHOW DATABASES query)
๏ mysql_field_len()
๏ mysql_lisWields()
๏ mysql_field_name()
๏ mysql_lisTables() (use SHOW TABLES query)
๏ mysql_field_table()
๏ mysql_numfields()
๏ mysql_field_type()
๏ mysql_numrows() (use mysqli_num_rows()
instead)
๏ mysql_fieldflags()
๏ mysql_pconnect() (append p: to the hostname
passed to mysqli_connect())
๏ mysql_fieldlen()
๏ mysql_result()
๏ mysql_fieldname()
๏ mysql_selectdb() (use mysqli_select_db() instead)
๏ mysql_fieldtable()
๏ mysql_table_name()
๏ mysql_fieldtype()
๏ mysql_tablename()
๏ mysql_freeresult() (use mysqli_free_result()
instead)
๏ mysql_unbuffered_query()

79. USE PDO!
PHP.NET/PDO

80. AGENDA
WHAT HAS CHANGED SINCE PHP 5?
WHAT’S NEW IN PHP 7?
OTHER THINGS YOU NEED TO KNOW
MIGRATING PHP 5 APPS TO PHP 7
CLOSING REMARKS & QUESTIONS

81. YOUR 1-STOP SOURCE
PHP.NET/MANUAL/EN/MIGRATION70.PHP

82. RECOMMENDED READING
IN2.SE/PHP7BOOK

83. PHP CHEATSHEETS
PHPCHEATSHEETS.COM

84. NOW READY FOR PHP 7
AND MORE COMING…

85. YOUR PROJECTS…
TIME TO UPGRADE

86. in it2PROFESSIONAL PHP SERVICES
Thank you!
Slides at in2.se/hd-php7
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