Taking Advantage of Arrays

Last week we started exploring the very basics of PHP programming. We started by first discussing the Web Server/Browser relationship, then began looking at PHP by first introducing how to comment our PHP code which is very important. We then introduced the echo and print functions, and demonstrated how to use variables and the variable naming rules. We also showed how to use concatenation.

The next step in our quest to conquer PHP is to explore arrays which are similar to variables. Arrays are used when you would like to create many variables which will be similar. Rather than create hundreds of variables, a single array could be used to store all of the related values. Each element in the array will have its own ID number which you can then use to find the desired value. For example:

<?php
$website[0] = "www.webdevnotes.com";
$website[1] = "www.looble.com";
$website[2] = "www.battlecity.net";
?>

<?php
$luckyNumber["Deceth"] = 11;
$luckyNumber["Bob"] = 67;
$luckyNumber["Harold"] = 99;
?>

<?php
print "Bob's lucky number is " . $luckyNumber["Bob"];
?>

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