The way PHP works/product displays

I have a question as to why (and I think this has to do more with how PHP works than maybe my code, unless there is something wrong with it that I don't see - if I leave the original only 4 shirts, and not copy the code of all 8 shirts arrays from the the text file, the code doesn't run and all I get is a blank page.

So when I just leave my code like this at the top:

<?php 

$products = array();
    $products[101] = array(
        "name" => "Logo Shirt, Red",
        "price" => 18
        "img" => "img/shirts/shirt-101.jpg"
    );
    $products[102] = array(
        "name" => "Mike the Frog Shirt, Black",
        "price" => 20,
        "img" => "img/shirts/shirt-102.jpg"
    );
    $products[103] = array(
        "name" => "Mike the Frog Shirt, Blue",
        "price" => 20,
        "img" => "img/shirts/shirt-103.jpg"
    );
    $products[104] = array(
        "name" => "Logo Shirt, Gray",
        "price" => 18,
        "img" => "img/shirts/shirt-104.jpg"
    );

?><?php 

The page won't display, as opposed to when I copy and paste the rest of the products. Can someone explain to me why this is? Is there somewhere in the CSS/PHP an expectation that there has to be that exact number of shirts from the text file? I'm just mulling this over.