Web Systems Development CSC215 Lecture 2 Introducing PHP

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

Setting up your environment • • Server Text editor IDE Remote server

Server • WAMP – Windows, Apache, My. SQL, and PHP • MAMP – Mac, Apache, My. SQL, and PHP • LAMP – Linux, Apache, My. SQL, and PHP

Recommended Server • Wamp. Server – http: //www. wampserver. com/en/

Text Editor • PSPad • Sublime Text • Note. Pad++

IDE • • Aptana Studio PHP Designer Net. Beans …

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

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 Wamp. Server install – http: //www. microsoft. com/enus/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

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

Automatic Conversion

Constants

Predefined Constants

print • Can be used within complex expressions unlike echo

Lecture content adapted from chapters 2 & 3 of Learning PHP, My. SQL, Java. Script, CSS & HTML 5, 3 rd Edition, by Robin Nixon.