WEEK6_Introduction PHP

Today we learned about PHP. Throughout this class, i feel PHP is interesting and fun. This is because when you miss something, it cannot be run in system.

What is PHP?
PHP is an open source and eventually the name changed to PHP Hypertext Pre-procesor.

Advantage of PHP:
a. easy to use
b. open source
c. multiple platform
d. language support for database

• must saved with a php extension
• must be terminated with a semicolon ；
• not generally case-sensitive
• character to indicate Comments : - // or # : single line
•                                                       - /* here is an introduction to server side script code inside a                                                                    multi-line comment */ : multi-line comment

PHP Syntax

1. PHP comment

2. Output / Display statement

Variables and Data Type

- variable contain a piece of data

- all variable in PHP begin with a $

- variable names are case sensitive

Operator 

Conditional Statement and Loops

Arrays

- array is a variable only contain a multiple value under a single variable name

- Example: To store information about a car in an array, we could use the following line; 

$CarInfo = array ("Avanza", "2004", 34500);

// an array could contain different type of variables

OR

$CarInfo = array();

$CarInfo [0] = "Innova";

$CarInfo [1] = "2002";

$CarInfo [2] = 34500;