Forcescript.com

There are some kind of arrays:

• Numeric array – An array with a numeric ID key
• Associative array – An array where each ID key is associated with a value

Numeric Arrays

A numeric array stores each element with a numeric ID key.

There are different ways to create a numeric array.

Example 1

In this example the ID key is automatically assigned:

$first_name = array(“Peter”,”John”,”Tony”);

Example 2

In this example we assign the ID key manually:

$first_name[0] = “Peter”;
$first_name[1] = “John”;
$first_name[2] = “Tony”;

Example that used in Php

<?php
$first_name[0] = “Peter”;
$first_name[1] = “John”;
$first_name[2] = “Tony”;

echo “$first_name[1] and $first_name[2] are $first_name[0]‘s friends”;
?>

And the output is

John and Tony are Peter’s friends

Associative Arrays

An associative array, each ID key is associated with a value.

When storing data about specific named values, a numerical array is not always the best way to do it.

With associative arrays we can use the values as keys and assign values to them.

Example 1

In this example we use an array to assign ages to the different persons:

$ages = array(“Peter”=>32, “John”=>30, “Tony”=>34);

Example 2

This example is the same as example 1, but shows a different way of creating the array:

$ages['Peter'] = “32″;

$ages['John'] = “30″;

$ages['Tony'] = “34″;

Example used in PHP :

<?php

$ages['Peter'] = “32″;

$ages['John'] = “30″;

$ages['Tony'] = “34″;

echo “Peter is ” . $ages['Peter'] . ” years old.”;

?>

and output is

Peter is 32 years old.