What is the purpose of the SELECT count(id) AS 'anzahl der eintraege' in the given code snippet?

The purpose of the SELECT count(id) AS 'anzahl der eintraege' in the code snippet is to retrieve the total number of entries in the database table with the alias 'anzahl der eintraege'. This query is useful when you need to know the count of records in a table for various purposes such as pagination, displaying the total number of items, or performing calculations based on the total count.

// Connect to the database
$pdo = new PDO('mysql:host=localhost;dbname=database_name', 'username', 'password');

// Query to get the count of entries in the table
$sql = "SELECT count(id) AS 'anzahl der eintraege' FROM table_name";
$stmt = $pdo->query($sql);
$count = $stmt->fetchColumn();

// Output the total count of entries
echo "Total number of entries: " . $count;