How can the user optimize the PHP script to improve its performance?

Issue: One way to optimize a PHP script for better performance is to minimize the number of database queries being executed. This can be achieved by combining multiple queries into a single query using joins or subqueries where possible. 

// Example of optimizing PHP script by reducing the number of database queries
// Original code with multiple queries
$query1 = "SELECT * FROM users WHERE id = 1";
$result1 = mysqli_query($connection, $query1);

$query2 = "SELECT * FROM posts WHERE user_id = 1";
$result2 = mysqli_query($connection, $query2);

// Optimized code with a single query using a join
$query = "SELECT users.*, posts.* FROM users
          LEFT JOIN posts ON users.id = posts.user_id
          WHERE users.id = 1";
$result = mysqli_query($connection, $query);

Keywords

PHP optimization performance caching profiling

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