1. >> PHP: Arrays

2. Arrays Arrays Syntax Holds a list of same type elements
$varName = array(‘a‘, ‘b‘, ‘c‘);
Accessing Array elements
varName[key];
Length of an Array
count(varName);
Separate using coma’s
Keys
Value a 1 b 2 c
Keyword

3. Associative Arrays: Arrays with custom keys Syntax
$varName = array(‘key1‘=>’a’, ‘key2‘=>’b’);
Accessing Array elements
varName[‘key1’];
Key names
(Strings or text)
Keyword
Keys
Value
key1 a
key2 b

4. Types of Arrays in PHP Arrays Arrays Associative Arrays
Declaration-time initialization
$arr = array(“a”, “b”, “c”);
Initialization after declaration
$arr = array();
$arr[0] = “a”;
Indexes are assigned automatically
[0], [1], [2]
Declaration-time initialization
$arr = array(101 => “a”,
102 => “b”,
103 => “c”);
Initialization after declaration
$arr = array();
$arr[101] = “a”;
Indexes are assigned manually
[101], [102], [103]
Array-name
Accessing Elements
Working Variable (like the i in your for loop)
foreach($arr as $a) {
echo $a; }

5. Multi-dimensional Array
A multidimensional array is an array containing one or more arrays.
In a multidimensional array, each element in the main array can also be an array. And each element in the sub-array can be an array, and so on.
$cars = array   (   array("Volvo",100,96),   array("BMW",60,59),   array("Toyota",110,100)   );
Volvo
100 96
BMW 60 59
Toyota
110
Associative Multi-Dimensional Arrays
$cars = array(); $cars[101] =array(“name”=>"Volvo",”val”=>100,”val2”=>96); $cars[102] = array(“name”=>"BMW",”val”=>60,”val2”=>59); $cars[103] = array(“name”=>"Toyota",”val”=>110,”val2”=>100);

6. Mini Project Our Old Files Go Online index.php header.php footer.php
contact.php
Go Online
Download the stuff.php file
Copy in the folder (D:\xampp\htdocs\Buy4mMe\)
Now open the project in Aptana/NetBeans

7. Setting up the Stuffs Array
Open the stuff.php page
Create the following multi-dimensional array named stuff
First dimension is the product numbers (101, 102)
Second Dimension includes the attributes (name, img, price)
TRY NOW
101
102
Amazon Echo
AR Drone
img/stuff/stuff-101.jpg
img/stuff/stuff-102.jpg
600
2500
“name”
=>
“img”
=>
“price”
=>

8. Importing other elements
Go Online
Download & Open the file products-array.txt
Copy the array declaration after your initializations
TRY NOW

9. Displaying the List TRY NOW <li> <a href=“#”>
Inside the div tag with class=“wrapper” under the h1 heading element, create an unordered list.
Set the class of the unordered list to “products”
Now we want to list the items one by one
TRY NOW
The location of the image
The name of the product
<li>
<a href=“#”>
<img src=“ ” alt=“ “/>
<p>View Details</p>
</a>
</li>

10. Web-Based Systems - Misbhauddin
Next on PHP
Database Handling
MySQL
phpMyAdmin
Web-Based Systems - Misbhauddin