How can the use of mysql_db_query be improved in PHP code?

The use of mysql_db_query in PHP code is deprecated and should be avoided. Instead, it is recommended to use the mysqli or PDO extension for interacting with a MySQL database. This will not only provide better security and performance but also ensure compatibility with newer versions of PHP. 

// Improved way to query a MySQL database using mysqli

$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);

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

// SQL query
$sql = "SELECT * FROM table_name";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // Output data of each row
    while($row = $result->fetch_assoc()) {
        echo "id: " . $row["id"]. " - Name: " . $row["name"]. "<br>";
    }
} else {
    echo "0 results";
}

$conn->close();

Keywords

mysql_db_query PHP database optimization performance

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