What are the potential pitfalls of using multiple MySQL connections in PHP scripts?

Using multiple MySQL connections in PHP scripts can lead to increased server load and potential performance issues. It can also make the code harder to maintain and debug. To avoid these pitfalls, it's recommended to use a single database connection throughout the script by creating a connection object and reusing it whenever needed. 

// Create a single MySQL connection object and reuse it throughout the script
$mysqli = new mysqli("localhost", "username", "password", "database");

// Check connection
if ($mysqli->connect_error) {
    die("Connection failed: " . $mysqli->connect_error);
}

// Use $mysqli for all database operations

Keywords

MySQL connections PHP scripts performance scalability

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