How can you optimize database queries for faster performance in PHP when dealing with a large number of entries?

When dealing with a large number of entries in a database, you can optimize database queries for faster performance in PHP by using indexes on columns frequently used in WHERE clauses, minimizing the use of wildcard characters in queries, and fetching only the necessary columns instead of selecting all columns in a query. 

// Example of optimizing a database query for faster performance in PHP
// Using indexes on columns frequently used in WHERE clauses
$query = "SELECT * FROM users WHERE email = :email";
$stmt = $pdo->prepare($query);
$stmt->execute(['email' => $email]);

// Minimizing the use of wildcard characters in queries
$query = "SELECT * FROM products WHERE name LIKE :search";
$stmt = $pdo->prepare($query);
$stmt->execute(['search' => '%' . $searchTerm . '%']);

// Fetching only the necessary columns instead of selecting all columns in a query
$query = "SELECT id, name FROM products";
$stmt = $pdo->prepare($query);
$stmt->execute();

Keywords

indexing query optimization caching pagination database normalization

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