Can not insert image in table <td> cell - php

Question

I am trying to write a shopping cart for my site and I want to display a table with a row for each item, including the part #, name, quantity, price and a small image. Everything displays fine except for the image, which appears outside (above) the table and not in the cell where I've placed it. Here's the code:
//create a table for the items in the cart
print("<table class='cart_table'>");
print("<tr class='first_row'>
<td> Item No. </td>
<td> Item Name </td>
<td> Quantity </td>
<td> Price </td>
<td> Image </td>
</tr>");
//for each item in the cart
foreach ($_SESSION['cart'] as $value) {
//create a new product object for the item
$product = new LG_Product($_SESSION['cart'][$i]['item']);
print("<tr>");
print("<td> " . $product->itemID . " </td>");
print("<td> " . $product->productName . " </td>");
print("<td> " . $_SESSION['cart'][$i++]['qty'] . " </td>");
print("<td> $" . $product->productPrice . " </td>" );
print("<td>" . $product->showPrimaryImage('small') . "</td>");
print("</tr>");
}
//end the table
print("</table>");
And here's the function that gets the image:
public function showPrimaryImage($variant) {
if($variant == "medium") {
print ("<img style = \" max-width:400px;
max-height:400px;
display: block;
margin-left: auto;
margin-right: auto;\"
src=\"" . WEBSITE_URL . PATH_DYNAMIC . "/products_" . $this->productNumber . "_1_" . $variant . ".jpg\"
alt=\"" . $this->productName . "\">
");
}
else if($variant == "large") {
print ("<img style = \" max-width:600px;
max-height:600px;
display: block;
margin-left: auto;
margin-right: auto;\"
src=\"". WEBSITE_URL . PATH_DYNAMIC . "/products_" . $this->productNumber . "_1_" . $variant . ".jpg\"
alt=\"" . $this->productName . "\">
");
}
else if($variant == "small") {
print ("<img style = \" max-width:100px;
max-height:100px;
display: block;
margin-left: auto;
margin-right: auto;\"
src=\"". WEBSITE_URL . PATH_DYNAMIC . "/products_" . $this->productNumber . "_1_" . $variant . ".jpg\"
alt=\"" . $this->productName . "\">
");
}
}//end function showPrimaryImage()
When I view the source in the browser, it appears the code that renders the image is not inside the pair. When I view the red warning in the browser source, it says:
start tag "img" seen in "table"
Here's a screen capture of where the image appears:
And here's the source that's output from my PHP code (when viewed in the browser, the entire tag statement is in red):
<table class='cart_table'>
<tr class='first_row'>
<td> Item No. </td>
<td> Item Name </td>
<td> Quantity </td>
<td> Price </td>
<td> Image </td>
</tr>
<tr>
<td> BQ2819 </td>
<td> A WWII Period U.S. Theater-made Fighting Knife with Sheath </td>
<td> 1 </td>
<td> $270.00 </td>
<img style = " max-width:100px;
max-height:100px;
max-height:100px;
display: block;
margin-left: auto;
margin-right: auto;"
src="http://www.mywebsite.com/dynamic/products_2056_1_small.jpg"
alt="A WWII Period U.S. Theater-made Fighting Knife with Sheath">
<td></td>
</tr>
<tr>
<td> BQ2819 </td>
<td> A WWII Period U.S. Theater-made Fighting Knife with Sheath </td>
<td> 1 </td>
<td> $270.00 </td>
<img style = " max-width:100px;
max-height:100px;
display: block;
margin-left: auto;
margin-right: auto;"
src="http://www.mywebsite.com/dynamic/products_2056_1_small.jpg"
alt="A WWII Period U.S. Theater-made Fighting Knife with Sheath">
<td></td>
</tr>
</table>

Answer 1

For the line:
print("<td>" . $product->showPrimaryImage('small') . "</td>");
You have a string concatenation, which means you will concatenate whatever the return value of the call to showPrimaryImage is. However, showPrimaryImage doesn't return anything. Therefore the program first outputs the image's html (from the showPrimaryImage call) and then outputs <td></td> from the outer print.
You need to change print to a return statement for your showPrimaryImage function

Answer 2

function showPrimaryImage($variant) {
if($variant == "medium") {
return img;
} else if() {
//...
}
}