PHP 5.3 – Part 1 Introduction to PHP 5.3 A Sydney PHP Group Presentation 4 th September 2008 By Timothy Chandler

So what’s the big deal!? PHP 5.3 = PHP 6 - Unicode + MORE! Tomorrow’s PHP Today. Forwards Compatibility.

PHP 5.3 = PHP 6 - Unicode + MORE!

Tomorrow’s PHP Today.

Forwards Compatibility.

So what’s new? New Syntax New Functions & Methods New Extensions Namespaces Lambda Functions & Closures Late Static Binding Lots of important changes A few gotchas.

New Syntax

New Functions & Methods

New Extensions

Namespaces

Lambda Functions & Closures

Late Static Binding

Lots of important changes

A few gotchas.

Important Changes & Gotchas Functions Array functions “next()” & “current()” no longer work with objects. “ session_start()” will now return a Boolean response “false” if it fails to start a session. By default, “ clearstatcache()” will no longer clear “realpath()” cache. Backwards Compatibility

Functions

Array functions “next()” & “current()” no longer work with objects.

“ session_start()” will now return a Boolean response “false” if it fails to start a session.

By default, “ clearstatcache()” will no longer clear “realpath()” cache.

Important Changes & Gotchas Magic Methods All magic methods must now be declared as “public”. “static” declarations are no longer allowed. “ __toString()” will no longer accept any parameters. Backwards Compatibility

Magic Methods

All magic methods must now be declared as “public”. “static” declarations are no longer allowed.

“ __toString()” will no longer accept any parameters.

Important Changes & Gotchas New Reserved Words “ namespace” “ goto” New Reserved Classes “ Closure” Backwards Compatibility

New Reserved Words

“ namespace”

“ goto”

New Reserved Classes

“ Closure”

Important Changes & Gotchas Depreciations Ticks This includes “register_tick_function()” Undepreciations “ is_a()” Backwards Compatibility

Depreciations

Ticks

This includes “register_tick_function()”

Undepreciations

“ is_a()”

Important Changes & Gotchas Windows Any Windows OS prior to Windows 2000 is no longer supported. Backwards Compatibility

Windows

Any Windows OS prior to Windows 2000 is no longer supported.

Important Changes & Gotchas Removed ncurses fpdf sybase dbase fbsql Extensions Added Phar Internationalization (Intl) File Information (Fileinfo) SQLite3

Removed

ncurses

fpdf

sybase

dbase

fbsql

Added

Phar

Internationalization (Intl)

File Information (Fileinfo)

SQLite3

Important Changes & Gotchas Not allowed to disable. PCRE Reflections SPL Extensions

Not allowed to disable.

PCRE

Reflections

SPL

Important Changes & Gotchas More powerful ini. A whole slew of changes which may or may not affect you. The PHP INI File

More powerful ini.

A whole slew of changes which may or may not affect you.

New Syntax It’s like HEREDOC, but it doesn’t evaluate it’s contents. Syntax: <<<‘NOWDOC’ <CONTENT> NOWDOC; “ NOWDOC”, like “HEREDOC”, can be replaced with any non-reserved word. NOWDOC

It’s like HEREDOC, but it doesn’t evaluate it’s contents.

Syntax:

<<<‘NOWDOC’

<CONTENT>

NOWDOC;

“ NOWDOC”, like “HEREDOC”, can be replaced with any non-reserved word.

New Syntax The Ternary Operator has been given a shortcut. Testing for only “true” or “false” is now possible. Syntax: $foo=true; !$foo?:print '$foo is True<br />'; $bar=false; $bar?:print '$bar is False<br />'; Ternary Operator

The Ternary Operator has been given a shortcut.

Testing for only “true” or “false” is now possible.

Syntax:

$foo=true;

!$foo?:print '$foo is True<br />';

$bar=false;

$bar?:print '$bar is False<br />';

New Syntax You can now cast a variable to NULL while using it and remove it from memory in one fell swoop. Syntax: $foo='foo'; $foo=(unset)print $foo; Unset Casting

You can now cast a variable to NULL while using it and remove it from memory in one fell swoop.

Syntax:

$foo='foo';

$foo=(unset)print $foo;

New Syntax The new “goto” keyword is useful for controlling breaks in loops and switches. Not recommended outside of loops and switches. Easy to abuse – be careful with your GCP. Syntax: print 1; goto label1; print 2; print 3; label1: print 4; goto

The new “goto” keyword is useful for controlling breaks in loops and switches.

Not recommended outside of loops and switches.

Easy to abuse – be careful with your GCP.

Syntax:

print 1;

goto label1;

print 2;

print 3;

label1:

print 4;

New Functions & Methods Too many for this presentation. They include: Array Date GMP Hash Image Math Mcrypt Network PCNTL PHP Core SHM SPL Streams Strings

Too many for this presentation.

They include:

Array

Date

GMP

Hash

Image

Math

Mcrypt

Network

PCNTL

PHP Core

SHM

SPL

Streams

Strings

New Functions & Methods “ array_replace()” – Finds and replaces based on key and merges the remainder. “ array_replace_recursive()” – Recursively finds and replaces based on key and merges the remainder. Array Functions

“ array_replace()” – Finds and replaces based on key and merges the remainder.

“ array_replace_recursive()” – Recursively finds and replaces based on key and merges the remainder.

New Functions & Methods “ date_add()” – Adds an amount of days, months, years, hours, minutes and seconds to a DateTime object. “ date_sub()” – Subtracts an amount of days, months, years, hours, minutes and seconds from a DateTime object “ date_diff()” – Takes two DateTime Objects and calculates the difference. Date Functions

“ date_add()” – Adds an amount of days, months, years, hours, minutes and seconds to a DateTime object.

“ date_sub()” – Subtracts an amount of days, months, years, hours, minutes and seconds from a DateTime object

“ date_diff()” – Takes two DateTime Objects and calculates the difference.

New Functions & Methods “ class_alias()” – Creates an alias of a class name. “ forward_static_call()” and “forward_static_call_array()” – Related to Late Static Binding. This will be discussed in another presentation. PHP Core

“ class_alias()” – Creates an alias of a class name.

“ forward_static_call()” and “forward_static_call_array()” – Related to Late Static Binding. This will be discussed in another presentation.

Coming Up October Part 2 – New PHP Internals Lambda Functions and Closures Namespaces – maybe? November Part 3 – New PHP Extensions Internationalization Phar

October

Part 2 – New PHP Internals

Lambda Functions and Closures

Namespaces – maybe?

November

Part 3 – New PHP Extensions

Internationalization

Phar