How to fix "Call to undefined method bind_param()" error

You get this error when you try to connect to a database using the MySQLi extension but do not have a valid MySQLi statement object to call the `bind_param()` method. The `bind_param()` method is used to create a MySQLi statement object, so that you can bind parameters in an SQL query. But, if you do not have a valid MySQLi statement object, this method cannot be called. There can be several possible reasons for this error: ## 1. MySQLi statement object was not created You did not call the `prepare()` method to create a MySQLi statement object. ## 2. MySQLi statement object is incorrect You have called `prepare()` method to create a MySQLi statement object, but this object is incorrect or null. ## 3. SQL query is incorrect Your SQL query is incorrect or there is a syntax error, due to which there is a problem in creating the MySQLi statement object. To resolve this error, you have to follow these steps: ## 1. Create a MySQLi statement object Call `prepare()` method to create your MySQLi statement object. ## 2. Check the MySQLi statement object Check your MySQLi statement object to see if it is valid or not. ## 3. Check the SQL query Check your SQL query to see if it is wrong or has a syntax error. For example: ```php $stmt = $mysqli->prepare("SELECT * FROM table WHERE id = ?"); if (!$stmt) { echo "MySQLi statement object not created"; exit; } $stmt->bind_param("i", $id); $stmt->execute(); ``` This code calls the `prepare()` method to create a MySQLi statement object and checks if the object was created successfully before calling `bind_param()`.