How can PHP developers troubleshoot and resolve MySQL-related issues in their code effectively?

Issue: One common MySQL-related issue in PHP development is encountering errors due to incorrect database connection settings. To resolve this, developers should double-check their database hostname, username, password, and database name in their connection code. 

// Database connection settings
$hostname = "localhost";
$username = "root";
$password = "";
$database = "my_database";

// Create a connection
$conn = new mysqli($hostname, $username, $password, $database);

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

Keywords

MySQL PHP troubleshooting error handling database connectivity

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