[grace55]

ARRAYS

An Array can be thought of as a single variable that stores more than one value. An array uses a key to determine what value to reference. So;

$array[key] = value;

Key values start at “0” normally, as PHP likes to number things starting at Zero instead of One. It’s a programming thing, I don’t know either.
Let’s use our truck examples from above, and assign then in an array.

<?php
$truck_array[0] = "Toyota";
$truck_array[1] = "Dodge";
$truck_array[2] = "Chevy";
$truck_array[3] = "Ford";
?>

And here’s how we could output information from the array:

<?php
echo "Two great truck makers are "
. $truck_array[0] . " & " . $truck_array[1];
echo "<br />Two more great truck makers are "
. $truck_array[2] . " & " . $truck_array[3];
?>

Here’s is the output result of the above array:

Two great truck makers are Toyota & Dodge
Two more great truck makers are Chevy & Ford

Associative Arrays

An Associative Array is an array in which the keys are associated with values.

<?php
$truck[“Toyota”] = Tundra;
$truck[“Nissan”] = Titan;
$truck[“Dodge”] = Ram;
?>

A Syntax example using the Associative Array above:

echo "Toyota makes the " . $truck[“Toyota”] . "<br />";
echo "Nissan makes the " . $truck[“Nissan”] . "<br />";
echo "Dodge makes the " . $truck[“Dodge”];

And, when viewed in a browser...

Toyota makes the Tundra
Nissan makes the Titan
Dodge makes the Ram

You may not see the usefulness of the Array and Associative Array right now, but I think (hope) it will come together a little more once we hit the next lesson - LOOPS.
Let’s move on!