If you are a developer who works with PHP and MySQL, you might come across the error "Call to undefined method mysqli_stmt::get_result()". This error can be frustrating and time-consuming to debug, especially if you are not familiar with the underlying cause. In this guide, we will explore the cause of this error and provide a step-by-step solution to help you resolve the issue.
Understanding the Cause of the Error
This error occurs when you are trying to use the get_result() method on a mysqli_stmt object, but the method is not defined. This method was introduced in PHP 5.3.0 and requires the MySQL Native Driver (mysqlnd) to be installed and enabled. If the driver is not installed or enabled, you will get this error.
Step-by-Step Solution
Follow these steps to resolve the "Call to undefined method mysqli_stmt::get_result()" error:
- Check if the MySQL Native Driver is installed and enabled on your server. You can do this by running the following command in your PHP code:
var_dump(function_exists('mysqli_fetch_all'));
If the output is false, then the MySQL Native Driver is not installed or enabled.
If the MySQL Native Driver is not installed, you can install it by following the instructions in the official PHP documentation.
If the MySQL Native Driver is installed but not enabled, you can enable it by adding the following line to your php.ini file:
extension=mysqlnd.so
Restart your web server to apply the changes.
Test your code again to see if the error has been resolved.
FAQ
Q1) What is the MySQL Native Driver?
The MySQL Native Driver (mysqlnd) is a PHP extension that provides a native, lightweight, and efficient way to communicate with MySQL servers. It is included in PHP 5.3.0 and later versions.
Q2) Can I use the get_result() method without the MySQL Native Driver?
No, the get_result() method requires the MySQL Native Driver to be installed and enabled. If the driver is not installed or enabled, you will get the "Call to undefined method mysqli_stmt::get_result()" error.
Q3) How do I check if the MySQL Native Driver is enabled?
You can check if the MySQL Native Driver is enabled by running the following command in your PHP code:
var_dump(function_exists('mysqli_fetch_all'));
If the output is false, then the MySQL Native Driver is not enabled.
Q4) Can I use an alternative method to get_result()?
Yes, you can use the bind_result() method to retrieve the results of a mysqli_stmt object. This method binds variables to the columns in the result set and fetches the values into those variables.
Q5) How do I install the MySQL Native Driver on Windows?
You can install the MySQL Native Driver on Windows by following the instructions in the official PHP documentation.