PDO Invalid parameter number - parameters in comments
===

Today I encountered a bug (in PDO) I never saw before, but is kinda obvious when you think about it.

I got the following error:
`Warning: PDOStatement::execute() [pdostatement.execute]: SQLSTATE[HY093]: Invalid parameter number:`

The query I was using was similar to the following:

    SELECT
        x
    FROM
        y
    WHERE
        -- CHECKING IF X = :Z --
        x = :y
    AND
        1 = 2

Obviously I had more parameters and a longer query.