I have my own php data object class that wraps the mysqli library. It works fine handling most datatypes, including text. As soon as I change a table column from text to mediumtext, I get the error described in the title of this question. I've tested my php scripts on several shared hosting environments, and I only get this error on one of them.
Does the MediumText and LongText really use up that much memory?
I will start optimizing my php classes, but I want to make sure I'm on the right track..