<|im_start|>system
You are a helpful AI assistant.<|im_end|>
<|im_start|>user
SQLSTATE[HY093]: Invalid parameter number: number of bound variables does not match number of tokens<|im_end|>
<|im_start|>assistant
This error means that your SQL statement has ? parameters (placeholders for bound variables), but you didn't actually bind that many variables to the statement.
For example, if your SQL was:
SELECT * FROM users WHERE id = ? AND name = ?

Then you'd need to bind two variables to the statement - likely with a call like:
stmt.bind_param('ii', $id, $name)

But if you only bound one variable, you'd get this HY093 error since the number of bound variables (1) doesn't match the number of tokens (2) in the SQL.
So you just need to ensure you bind the correct number of variables to match the number of placeholders in your SQL statement.<|im_end|>
<|im_start|>user
and how can I solve this mistake?<|im_end|>
<|im_start|>assistant
You can resolve the issue by ensuring that the number of variables being passed to the query matches the number of placeholders in the query. To do this, you can do the following:

1. Count the number of placeholders in your query (e.g. :numRows).

2. Count the number of variables being passed to the query (e.g. $numRows).

3. Ensure that both numbers match. If they don't, add or remove placeholders or variables as necessary.

For example, if your query looks like this:

$query = "SELECT * FROM table WHERE column = :numRows";

And you are passing in a single variable, $numRows, then the query should work without errors. If you are passing in multiple variables, you will need to add additional placeholders for each variable in your query.<|im_end|>