introduction to php (sdphp)
DESCRIPTION
A very good presentation that has been used by a couple presenters of the SDPHP group, including myself. Takes you from the very basics of PHP to more advanced ideas like OOP.TRANSCRIPT
INTRODUCTION TO PHPSDPHP
Twitter: @sdphp | www.sdphp.org (coming soon)MeetUp: www.meetup.com/SanDiegoPHP/
Who we are:Presenters
John Congdon - Senior Web Developer at Networx Online
Twitter: @johncongdonEmail: [email protected]: http://www.linkedin.com/in/johncongdon
Eric Van Johnson - Systems Architect at AMCO International Education Services, Inc.
Twitter: @shocmEmail: [email protected]: http://www.linkedin.com/in/vanjohnson
San Diego PHP User GroupSan Diego PHP Meetups => http://www.meetup.com/SanDiegoPHP/Facebook => https://www.facebook.com/groups/SanDiegoPUG/IRC => freenode.net #sdphpTwitter => @sdphp
A quick historyCreated in 1994 by Rasmus Lerdorf and was a set of simple Common Gateway Interface (CGI) binaries written in the C programming language that he used for tracking visits to his online resume, he named the suite of scripts "Personal Home Page Tools"
In 1998 PHP 3.0 is announced and is a complete rewrite of the platform. By this time Andi Gutmans and Zeev Suraski of Tel Aviv, Israel join Rasmus to collaborate on the new implementation. This is also when PHP got it's official name PHP: Hypertext Preprocessor, which is a recursive acronym.
A quick history (cont.)PHP 4 is released in 2000 sporting a new engine dubbed 'Zend Engine' (comprised of the first names of Zeev and Andi). PHP 4.0 introduces a wide range of additional new features. In addition to the highly improved performance it also included key features such as support for many more web servers, HTTP sessions, output buffering, more secure ways of handling user input and several new language constructs.There are companies that still use PHP 4.x in their production environment. (And we like to make fun of them)
PHP 5 released in 2004 powered by Zend Engine II with a new object mode. Current stable version of PHP is 5.4.8. Several new features come packed in the current releases of PHP such as Namespace support, Native JSON support, and security improvements.
Who uses PHP?
EVERYONE!Google / Yahoo / Facebook / Sony /
Bank of America / NYSE / AT&T / Blah Blah Blah Blah
OPEN & CLOSING TAGS
VARIABLES
A Variable, as the name suggests, can have its value change during the execution of a script.
CONSTANTS
A constant, once defined, cannot be changed or unset. Traditionally constants are uppercase.
INCLUDE FILE.. ONCE
Useful for class and function loading
INCLUDING MISSING SCRIPTS
TYPES IN PHP
● Strings● Integers● Floats● Arrays● and many more...
STRINGS
What's the difference?
INTEGERS
ARRAYS
Arrays are zero-based.
Arrays can be of mixed types
ASSOCIATIVE ARRAYS
Key => Value pairs of data
FLOW CONTROL
FOR LOOPS
FOREACH LOOPS
FOREACH LOOPS
WHILE LOOPS
DO WHILE
SWITCH CASES
CONTINUE AND BREAK
● for● foreach● while● do ... while● switch
ALTERNATE SYNTAXES
ALTERNATE SYNTAX: IF
ALTERNATE SYNTAX: FOR
ALTERNATE SYNTAX: FOREACH
ALTERNATE SYNTAX: WHILE
FUNCTIONS
CLASSES
MAGIC: GET
MAGIC: GET
MAGIC: SET
STATIC
CLASS CONSTANTS
CLASS VISIBILITY
METHOD OVERLOADING
DATABASE ACCESS
Why you should be using PDO (PHP Data Objects)
● Cross Database Driver support● Prepared Statements● Proper bindings● and lots lots more
MODELS, VIEWS, CONTROLLERS
● Code Separation● Reusability● Ease Refactoring
MODELS
● a model represents your data● Logical container for
○ Database calls○ API Access
● Models usually represent○ Tables in a database○ a file or collection of files on a hard drive○ Documents stored in Mongo○ Any other data containers you need to define
VIEWS
VIEW.. MODELS?
CONTROLLERS
Other Cool Things PHP Can Do That Not a Lot of People Know.
● PHP CLI - PHP files don't have to be web pages. PHP is a very powerful language that can be used from the command line to perform a wide range of system task.
● As of PHP 5.4.0, the CLI SAPI provides a built-in web server.
$ cd ~/public_html$ php -S localhost:8000
Other Cool Things (cont)
● As of PHP 5.1.0, the CLI SAPI provides an interactive shell using the -a option.
PHP Tools
● Text Editor (Notepad / Notepad ++) ● Vim IDEs● Eclipse (Open Source)
○ PDT Plugin (Open Source)○ Aptana PHP (Open Source)
■ Aptana Studio Pro (Commercial)○ Zend Studio (Commercial)
● NetBeans (Open Source)
● PhpStorm (Commercial)
● NuSphere PhpED (Commercial)
What Do Employers Look For?● A college degree, so you are on the right track
● Code examples. Will typically check for a Github account. Make sure you have some publicly contributed code. Open Source Projects are good place to do this.
● Certifications○ Zend PHP Certifications http://www.zend.
com/services/certification/○ MySQL Developer http://education.oracle.
com/pls/web_prod-plq-dad/db_pages.getpage?page_id=458&get_params=p_track_id:MDEV
How Can You Improve Your Skills?
● SD PHP User Group● Conferences
○ Code Works (Los Angeles Dec 12)■ http://codeworks.phparch.com/los-angeles/
○ PHP Tek (Chicago every year, usually May)■ 2013 has not been announced yet■ http://tek.phparch.com/
○ ZendCon (October)■ http://zendcon.com/
● Contribute to Open Source● Practice, practice, practice● Learn to know what you don't know
What Else Do Employers Look For?
PASSIONDevelopment is a very personal thing. A developer needs to be creative, logical, focused, and enjoy what they are doing. Get involved with the PHP community. Forums, StackOverflow, Local User Groups like SDPHP ;-)
ResourcesLocal
San Diego PHP Meetups => http://www.meetup.com/SanDiegoPHP/Facebook => https://www.facebook.com/groups/SanDiegoPUG/IRC => freenode.net #sdphpTwitter => @sdphp / @shocm / @johncongdon / @williammanley
OthersZend.comStackOverflow => http://stackoverflow.com/questions/tagged/phpphp|Arch => http://www.phparch.com/
CreditsOriginal Presentation by
William Cahill-Manley - Application Developer for Submodal
Twitter: @williammanley Email: [email protected]
Today's Presenters John Congdon - Senior Web Developer at Networx Online
Twitter: @johncongdonEmail: [email protected]: http://www.linkedin.com/in/johncongdon
Eric Van Johnson - Systems Architect at AMCO International Education Services, Inc.
Twitter: @shocmEmail: [email protected]: http://www.linkedin.com/in/vanjohnson