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PHP Build a Simple PHP Application Integrating with PayPal Including the Products Array

Posted by Ben Goldman
Ben Goldman
14,626 Points

PHP Arrays and Keys

I've been looking at the following code and trying to understand exactly how the id key is incremented. First, how does the foreach function know to start off at 101? Then, what makes it increment with each succession of the loop? Such as 101, 102, 103, etc. Thanks in advance to anyone who comments.

' ' '

<article>
<ul class="products">
<?php foreach($products as $product_id => $product) { 
    echo "<li>";
    echo '<a href="shirt.php?id=' . $product_id . '">';
    echo '<img src="' . $product["img"] . '" alt="' . $product["name"] . '">';
    echo "<p>View Details</p>";
    echo "</a>";
    echo "</li>";                                                       
    }                   
?>
</ul>

</article>

' ' '

Ben Goldman
Ben Goldman
14,626 Points

Once again, I answered my own question. I forgot there was an inc file with the keys already set up for the shirts. Never mind.

4 Answers

Spenser Hale
Spenser Hale
20,915 Points

Glad you were able to answer your own question.

Rashaad Prince
Rashaad Prince
7,129 Points
Rashaad Prince
Rashaad Prince
7,129 Points

Awesome. I was looking at the same exact thing!

Sheri Miner
PLUS
Sheri Miner
Courses Plus Student 5,319 Points
Sheri Miner
Sheri Miner
Courses Plus Student 5,319 Points

Yeah I struggled with this at first too. I'm assuming since we use the key which points to [102], [103], etc..... it makes sense.

WCM Operations
PLUS
WCM Operations
Courses Plus Student 15,102 Points
WCM Operations
WCM Operations
Courses Plus Student 15,102 Points

It was also helpful for me to review the foreach reference page at php.net.

http://php.net/manual/en/control-structures.foreach.php