Solution to PHP Fatal error: Call to a member function fetch_object()

When using PHP to develop websites or applications, we may encounter the error PHP Fatal error: Call to a member function fetch_object(). This kind of error is usually caused by some syntax or logic errors in the code, but it is not a very serious error. You just need to find the cause and solve it.

In this article, we will explore the solutions to PHP Fatal error: Call to a member function fetch_object().

1. Check your code for syntax errors

One of the most common errors is syntax errors in PHP. If you have any syntax errors in your code, then PHP will not be able to parse the code correctly, causing errors to appear. Therefore, checking your code for any syntax errors is the first priority.

If you are using a PHP integrated development environment (IDE), it may alert you to errors as you enter code. However, if you are not using an IDE, you can check it using PHP's own syntax checker. Just enter the following command on the command line:

php -l your_file.php

This command will prompt you for any syntax errors in the file.

2. Check the correctness of the query statement in the statement

When using fetch_object(), you must interact with the database, so checking whether your query statement is correct is very important.

Query statements should vary depending on the database type and version you are using. If you are not sure whether your query is correct, test the query in a database management tool.

3. Check database connection

fetch_object() needs to interact with the database, therefore, it is necessary to check whether the database connection is successful. If you cannot connect to the database, this will cause this error to appear.

Check whether your database configuration is correct. You can test the database connection using the following code:

$conn = new mysqli($host, $user, $password, $database);

if ($conn->connect_error) {

die("Connection failed: " . $conn->connect_error);

}
echo "Connected successfully";

If the code outputs "Connection failed", you need to check whether your database configuration is correct.

4. Check your query results

fetch_object() must get the query results, otherwise it will not work properly. This may cause this error to appear if the query returns no results.

Check whether your query results are empty. You can use the following code to check if the query result is empty:

if ($result->num_rows > 0) {

// fetch result object

} else {

// handle empty result

}

If the query is empty, process it according to your needs.

5. Check your PHP version

The PHP version may also cause this error to appear. fetch_object() requires PHP version to be at least version 5.0. If your PHP version is lower than this, this will cause this error to appear.

Check your PHP version. Just enter the following command on the command line:

php -v

If your PHP version is lower than 5.0, then you need to upgrade your PHP version.

Summary

In this article, we explored various possible causes of PHP Fatal error: Call to a member function fetch_object() error. If you encounter this error, please follow the steps above to check and resolve the issue. Remember, every error has a solution, finding the problem and solving it will help you get better results in PHP development.

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