Error_list

In this article, we will focus on the mysqli_error_list() function in PHP, which is used to get an array of errors that occurred during the most recent MySQLi operation. We will provide you with an overview of the function, how it works, and examples of its use.

Introduction to the mysqli_error_list() function

The mysqli_error_list() function is a built-in function in PHP that is used to get an array of errors that occurred during the most recent MySQLi operation. This function is useful when you need to handle multiple errors in your MySQLi code and take appropriate action based on the errors.

How to use the mysqli_error_list() function

Using the mysqli_error_list() function is very simple. You just need to call the function on a valid MySQLi object. Here is an example:

<?php
$mysqli = mysqli_connect("localhost", "username", "password", "database");

$query = "SELECT * FROM my_table";
$result = mysqli_query($mysqli, $query);

if (!$result) {
    $error_list = mysqli_error_list($mysqli);
    foreach ($error_list as $error) {
        echo "Failed to execute query. Error message: " . $error['message'] . "\n";
    }
    exit();
}

mysqli_close($mysqli);
?>

In this example, we call the mysqli_connect() function to connect to a MySQL database with a username and password. We then execute a query using the mysqli_query() function and store the result in a variable. We check if there was an error in the query using the !$result condition. If there was an error, we call the mysqli_error_list() function to get an array of errors that occurred during the most recent MySQLi operation. We then loop through the array and output each error message and exit the script.

Advanced usage

The mysqli_error_list() function can also be used in more advanced scenarios. For example, you can use the function to get the error code and SQLSTATE error code for each error. Here is an example:

<?php
$mysqli = mysqli_connect("localhost", "username", "password", "database");

$query = "SELECT * FROM my_table";
$result = mysqli_query($mysqli, $query);

if (!$result) {
    $error_list = mysqli_error_list($mysqli);
    foreach ($error_list as $error) {
        echo "Failed to execute query. Error message: " . $error['message'] . "\n";
        echo "Error code: " . $error['errno'] . "\n";
        echo "SQLSTATE error code: " . $error['sqlstate'] . "\n";
    }
    exit();
}

mysqli_close($mysqli);
?>

In this example, we call the mysqli_connect() function to connect to a MySQL database with a username and password. We then execute a query using the mysqli_query() function and store the result in a variable. We check if there was an error in the query using the !$result condition. If there was an error, we call the mysqli_error_list() function to get an array of errors that occurred during the most recent MySQLi operation. We then loop through the array and output each error message, error code, and SQLSTATE error code and exit the script.

Conclusion

In conclusion, the mysqli_error_list() function is a useful tool for handling multiple errors in your MySQLi code and taking appropriate action based on the errors. By understanding how to use the function and