php-mysqlHow to call a stored procedure in MySQL using PHP?

Calling a stored procedure in MySQL using PHP is a simple process. The following example code block shows how to call a stored procedure named myProcedure:

$mysqli = new mysqli("localhost", "my_user", "my_password", "world");

/* check connection */
if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}

/* call the stored procedure */
if ($mysqli->multi_query("CALL myProcedure()")) {
    do {
        /* store first result set */
        if ($result = $mysqli->store_result()) {
            while ($row = $result->fetch_row()) {
                printf("%s\n", $row[0]);
            }
            $result->free();
        }
        /* print divider */
        if ($mysqli->more_results()) {
            printf("-----------------\n");
        }
    } while ($mysqli->next_result());
}

/* close connection */
$mysqli->close();

The output of the example code above would be the result of the stored procedure myProcedure:

Result of myProcedure
-----------------
More results of myProcedure

Code explanation

1. $mysqli = new mysqli("localhost", "my_user", "my_password", "world"); - This line creates a new MySQLi object with the given parameters.

2. if (mysqli_connect_errno()) { - This line checks if there is an error in the connection.

3. if ($mysqli->multi_query("CALL myProcedure()")) { - This line calls the stored procedure myProcedure.

4. if ($result = $mysqli->store_result()) { - This line stores the result of the stored procedure.

5. while ($row = $result->fetch_row()) { - This line fetches the result row by row.

6. printf("%s\n", $row[0]); - This line prints the result of the stored procedure.

7. $result->free(); - This line frees the result of the stored procedure.

8. if ($mysqli->more_results()) { - This line checks if there are more results.

9. $mysqli->close(); - This line closes the connection.

Helpful links

• MySQLi Procedural API
• MySQLi Object-oriented API

Edit this code on GitHub