Web Systems Development (CSC-215) Lecture 2: Introducing PHP Wednesday 31st January 2018

Setting up your environment Server Text editor IDE Remote server

Server WAMP MAMP LAMP Windows, Apache, MySQL, and PHP Mac, Apache, MySQL, and PHP LAMP Linux, Apache, MySQL, and PHP

Recommended Server WampServer http://www.wampserver.com/en/

Text Editor PSPad Sublime Text NotePad++

IDE Aptana Studio PHP Designer NetBeans …

Remote Server http://www.000webhost.com/ http://www.heliohost.org/home/ Plus FTP client, e.g., FileZilla

Installing WAMP Download Run Setup

Go with default options

Choose the browser you want to use

Troubleshooting installation issues Install the Visual C++ 2012 redistributable before going ahead with the WampServer install http://www.microsoft.com/en-us/download/details.aspx?id=30679

Testing the WAMP Installation If your WAMP icon does not turn green, try switching Skype off and restarting the server

Incorporating PHP Within HTML Your document should have a .php extension

View Source

Basic syntax overview

Comments

End of statement semi-colon

$ at start of variable names

String Variables

Numeric Variables

Arrays

Multi-dimensional arrays

Variable naming rules

Arithmetic Operators

Assignment Operators

Comparison Operators

Logical Operators

String Concatenation

String Types Single quote evaluates string as a literal.

String Types Double quote enables evaluation of any variables included inside.

Escape Character \t, \n and \r can also be used

Multiple Line Commands

Multiple Line Commands

Multiple Line Commands

Multiple Line Commands

Variable Typing Loosely typed Variables need not be declared before they are used

Automatic Conversion

Automatic Conversion

Constants

Predefined Constants

print Can be used within complex expressions unlike echo

Lecture content adapted from chapters 2 & 3 of Learning PHP, MySQL, JavaScript, CSS & HTML5, 3rd Edition, by Robin Nixon.