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PHP Integrating PHP with Databases Limiting Records in SQL Getting Specific with Queries

Posted by Trần Phúc
Trần Phúc
2,264 Points

ISSUE USE ORDER BY AND LIMIT IN PHP

WHY IT DONT WORK LIKE TEACHER

index.php 
<?php 
include("inc/functions.php");
$pageTitle = "Personal Media Library";
$section = null;

include("inc/header.php"); ?>
        <div class="section catalog random">

            <div class="wrapper">

                <h2>May we suggest something?</h2>

        <ul class="items">
            <?php
            $random = random_catalog_array();
            foreach ($random as $item) {
                echo get_item_html($item);
            }
            ?>                          
                </ul>

            </div>

        </div>

<?php include("inc/footer.php"); ?>
catalog.php 
<?php 
include("inc/functions.php");
$catalog = full_catalog_array();

$pageTitle = "Full Catalog";
$section = null;

if (isset($_GET["cat"])) {
    if ($_GET["cat"] == "books") {
        $pageTitle = "Books";
        $section = "books";
    } else if ($_GET["cat"] == "movies") {
        $pageTitle = "Movies";
        $section = "movies";
    } else if ($_GET["cat"] == "music") {
        $pageTitle = "Music";
        $section = "music";
    }
}

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

<div class="section catalog page">

    <div class="wrapper">

        <h1><?php 
        if ($section != null) {
            echo "<a href='catalog.php'>Full Catalog</a> &gt; ";
        }
        echo $pageTitle; ?></h1>

        <ul class="items">
            <?php
            $categories = array_category($catalog,$section);
            foreach ($categories as $id) {
                echo get_item_html($catalog[$id]);
            }
            ?>
        </ul>

    </div>
</div>

<?php include("inc/footer.php"); ?>
fuction.php 
<?php function random_catalog_array() {
  include("connection.php");
  try{
  $results = $db->query("SELECT media_id, title,category,img
            FROM Media
            ORDER BY RAND()
            LIMIT 4"
          );
   } 
    catch(Exception $e){
    echo "Unable to retrieved results";
    exit;
    }
    $catalog=$results->fetchAll();
    return $catalog;
} ?>