What are the drawbacks of establishing a new SQL connection for each query in a PHP script?

Establishing a new SQL connection for each query in a PHP script can be inefficient and resource-intensive. It can lead to increased server load and slower performance due to the overhead of establishing and tearing down connections repeatedly. To solve this issue, it is recommended to establish a single database connection at the beginning of the script and reuse it for multiple queries. This approach improves performance and reduces resource consumption. 

// Establish a single database connection
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";

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

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

// Use the $conn object for executing queries
$sql = "SELECT * FROM table_name";
$result = $conn->query($sql);

// Process the query result

// Close the connection at the end of the script
$conn->close();

Keywords

SQL connection PHP script performance resource consumption scalability

Related Questions