How can PHP beginners avoid common mistakes when implementing a pagination feature in their web applications?

When implementing a pagination feature in a web application, beginners often make mistakes such as not properly sanitizing user input, not handling edge cases like out-of-range page numbers, and not correctly calculating the offset for fetching data from a database. To avoid these common mistakes, it is important to validate and sanitize user input, handle edge cases gracefully, and ensure the correct calculation of the offset for pagination. 

// Sanitize and validate the page number input
$page = isset($_GET['page']) ? (int)$_GET['page'] : 1;
if($page < 1) {
    $page = 1;
}

// Calculate the offset for fetching data from the database
$limit = 10; // Number of items per page
$offset = ($page - 1) * $limit;

// Query the database with the calculated offset and limit
$query = "SELECT * FROM table_name LIMIT $offset, $limit";
// Execute the query and fetch results
// Display pagination links and handle edge cases

Keywords

PHP pagination beginners implementation mistakes

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