How can i avoid conditional statements or/and switch statements?-CodePudding

This is my requirement from a recruiter:

Please avoid usage of conditional statements or/and switch statements to different product types in runtime

This is the code I wrote:

<?php
    if ($product['product_type'] === "DVD") {
        echo "<p>Size: ".$product['size']."MB</p>";
    } elseif ($product['product_type'] === "Furniture") {
        echo "<p>Dimentions: ".$product['dimentions']."</p>";
    } elseif ($product['product_type'] === "Book") {
        echo "<p>Weight: ".$product['weight']."Kg</p>";
    }
?>

How can I avoid this logic with some of the OOP concept?

CodePudding user response：

To avoid using conditionals you could use some sort of lookup to match the type to the field display I think.

Something like this perhaps:

$lookup = [
  "DVD" => ["field" => "size", "append" => "MB"],
  "Furniture" => ["field" => "dimentions", "append" => ""],
  "Book" => ["field" => "weight", "append" => "Kg"],
];

$LookupItem = $lookup[$product["product_type"]];
echo $product[$LookupItem["field"]].$LookupItem["append"];

Live demo: https://3v4l.org/Kc4hV