What best practices should be followed when modifying code to switch from mysql to mysqli in PHP?

When modifying code to switch from mysql to mysqli in PHP, it is important to update the database connection code, query execution functions, and result fetching methods. Additionally, ensure that proper error handling is implemented for mysqli functions. 

// Update the database connection code from mysql to mysqli
$mysqli = new mysqli($host, $username, $password, $database);

// Update query execution functions
$result = $mysqli->query($query);

// Update result fetching methods
while ($row = $result->fetch_assoc()) {
    // Process each row
}

// Implement error handling for mysqli functions
if ($mysqli->connect_error) {
    die("Connection failed: " . $mysqli->connect_error);
}

Keywords

mysql mysqli PHP database migration

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