<div>
Let's figure we have a cube, eg a Rubik's cube. 
This 'cube' might have width x length x height 30 x 50 x 20 units. 
Let's call $myArray[w][l][h] the smaller unit cube which is at width w, length l and height h. 
This cube might have a content (eg, the number of beans inside this unit cube). 
 
This is pecisely what you would find using php arrays. 
 
If you make l and h run all over the range of possible values for these dimensions, we get a 'planes' for each h value. 
So we have the 'cart plane' for which h equals the constant 'cart', and which covers the rectangle of width 1...w and length 1...l
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<div>
how should I interpret the ['cart'] dimension? 
 
PHP calls this an Associative Array, it's a string representing an index instead of an integer. 
</div>

<div>
Consider the following example to illustrate the array in question: 

<pre><code class="code-10 nolinks" id="code-121230">&lt;?php
$i=1;
$j=3;
$myArray[$i][$j]['cart']=&quot;value&quot;;
echo '&lt;pre&gt;'.print_r($myArray,true);
?&gt;
--------------------------------------------------------------------------------
Array
(
 [1] =&gt; Array
 (
 [3] =&gt; Array
 (
 [cart] =&gt; value
 )
 
 )
 
)
</code></pre>
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<div>
 
 
I guess now I can digest it better &nbsp;!!! 
 
For a scenario which I'm thinking such as Shopping Cart, will this help? where the first dimenstion is Category, 2nd dimension &nbsp;and the 3rd one which can be the product name. Right? 
 
 
$myArray[$category][$product]['Detail']= &quot;PHP and MySQL Book&quot;; 
 
Where category = 1 represents that it belongs to &nbsp;books &nbsp;category 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; prodcut &nbsp;= 32 represents that it is a programming book. 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; detail &nbsp; &nbsp; = &nbsp;name of the book and etc. 
 
Right? 
 

</div>

<div>
It all depends how you want to search the array and/or iterate (loop through) the categories/books etc. &nbsp;Consider this extended example: 

<pre><code class="code-1 nolinks" id="code-121252">&lt;?php
$category='1';
$product='32';
$bookid='2312';
$myArray[$category][$product][$bookid]= array(&quot;name&quot;=&gt;&quot;PHP and MySQL Book&quot;,&quot;author&quot;=&gt;&quot;John Doe&quot;,&quot;pubyear&quot;=&gt;&quot;2008&quot;);
echo '&lt;pre&gt;'.print_r($myArray,true);
echo $myArray[1][32][2312]['name'];
?&gt;
</code></pre>
</div>

<div>
If you are thinking to a shopping cart, I would suggest you do NOT use this path. 
 
You need to build/ design your system around a database (MySQL would be the easiest with php). 
Categories and subcategories would be product information in the database. 
 
You should also consider using some of the available open-source package. 
Most popular is osCommerce with its descendants like ZenCart or Cre-Loaded. 
The new kid on the block is Magento. It uses lots of resources: not a problem if you experiment on your own machine with XAMPP, might be problematic in some shared hosting environment. 
 
Why should you use this packages? because you will be very soon on the market, and will be able to concentrate on sales and marketing rather than on PHP details
</div>

<div>
Thanks for the question and the points.
</div>

<div>
<div class="content wysiwyg-content">
Hello group, 
 
So far I have been learning basic things about PHP and of course used PHP arrays as well but in a point I ran into an array like &nbsp; &nbsp; $myArray[$i][$j]['cart'] 
Now, I'm confused! how should I interpret the ['cart'] dimension? can somebody help me to understand this? 
 
 
Thanks, 
 
 

</div>
</div>

Hello group,

So far I have been learning basic things about PHP and of course used PHP arrays as well but in a point I ran into an array like     $myArray[$i][$j]['cart']
Now, I'm confused! how should I interpret the ['cart'] dimension? can somebody help me to understand this?


Thanks,




PHP array with multiple dimension

PHP is a widely-used server-side scripting language especially suited for web development, powering tens of millions of sites from Facebook to personal WordPress blogs. PHP is often paired with the MySQL relational database, but includes support for most other mainstream databases. By utilizing different Server APIs, PHP can work on many different web servers as a server-side scripting language.