The details page does not open in the browser.?

Question

I get a blank browser page. I don't know whats wrong with my code. Please help..!

PHP

functions.php

<?php


  function get_item_html($id,$item) {
      $output = "<li><a href='details.php'><img src='"
          . $item["img"] . "' alt='"
          . $item["title"] . "' />"
          . "<p>View Details</p>"
          . "</a></li>";
      return $output;
  }



function array_category($catalog, $category){

   $output = array();

  foreach ($catalog as $id => $item) {
      if ($category == null  OR strtolower($category) == strtolower($item["category"])) {
      $sort = $item["title"];
      $sort = ltrim($sort, "The ");
      $sort = ltrim($sort, "A ");
      $sort = ltrim($sort, "An ");
      $output[$id] = $sort;

    }
  }

  asort($output);

  return array_keys($output);
}




 ?>

PHP

details.php

<?php

include('inc/data.php');
include('inc/functions.php');



if (isset($_GET["id"])) {
    $id = $_GET["id"];

    if (isset($catalog[$id])) {
       $item = $catalog[$id];
    }

  }

    if (!isset($item)) {
        header("location:catalog.php");
        exit;
    }



$pageTitle = $item["title"];
$section = null;

include('inc/header.php'); ?>

<div class="section page">

  <div class="wrapper">

    <div class="media-picture">

      <span>
        <img src="<?php echo $item["img"]; ?>" alt="<?php echo $item["title"]; ?>">
     </span>

    </div>

    <div class="media-details">

      <h1><?php echo $item["title"]; ?></h1>



    <table>

      <tr>
        <th>Category</th>
        <td><?php echo $item["category"]; ?></td>
      </tr>

      <tr>
        <th>Genre</th>
        <td><?php echo $item["genre"]; ?></td>
      </tr>

      <tr>
        <th>Format</th>
        <td><?php echo $item["format"]; ?></td>
      </tr>


      <tr>
        <th>Year</th>
        <td><?php echo $item["year"]; ?></td>
      </tr>



      <?php if (strtolower($item["category"]) == "books"]) { ?>

        <tr>
          <th>Authors</th>
          <td><?php echo implode(", ",$item["authors"]); ?></td>
        </tr>

        <tr>
          <th>Publisher</th>
          <td><?php echo $item["publisher"]; ?></td>
        </tr>

        <tr>
          <th>ISBN</th>
          <td><?php echo $item["isbn"]; ?></td>
        </tr>


      <?php } else if (strtolower($item["category"]) == "movies"]) { ?>
        <tr>
          <th>Director</th>
          <td><?php echo $item["director"]; ?></td>
        </tr>

        <tr>
          <th>Writers</th>
          <td><?php echo implode(", ",$item["writers"]); ?></td>
        </tr>

        <tr>
          <th>Stars</th>
          <td><?php echo implode(", ",$item["stars"]); ?></td>
        </tr>


      <?php } else if (strtolower($item["category"]) == "music"]) { ?>
        <tr>
          <th>Artist</th>
          <td><?php echo $item["artist"]; ?></td>
        </tr>

       <?php } ?>

  </table>

  </div>

</div>

Answer 1 · 2018-07-24T12:51:56Z

July 24, 2018 12:51pm

There could be multiple things wrong which is hard to see without seeing all your php files but the one i can see straight away is an issue with your get_item_html function.

Problem

Although you point the link to the details page, you do not pass through the value as to which details the function should pull up. As you can see below in your anchor tag, you reference the details.php but do not point to any $id.

<?php
  function get_item_html($id,$item) {
      $output = "<li><a href='details.php'><img src='"
          . $item["img"] . "' alt='"
          . $item["title"] . "' />"
          . "<p>View Details</p>"
          . "</a></li>";
      return $output;
  }

Solution

As you can see here within the anchor tag, after the details.php we pass in a value of $id to point to the item within the array

<?php
function get_item_html($id, $item) {
          return "
        <li>
           <a href='details.php?id=" . $id . "'>
              <img src='" . $item["img"] . "' alt='" . $item["title"] . "'/>" ."
              <p> View Details </p>
           </a>
        </li>
          ";
}

In my opinion php is such an ugly language, structuring the php like it is structured in html helps me debug these issues, Good Luck!

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