As stated above, either use place-holders - which is preferred because it's cleaner, faster and in general easier to read, or use dbh->quote and don't insert quotes yourself.

When you ask the database driver to quote your stuff (via either mechanism) you never add your own quotes. It won't work, it's not needed and even if it was, it would only add a new point of failure.

"What should it profit a man, if he should win a flame war, yet lose his cool?"

In reply to Re: Preventing MySQL Injection by Joost
in thread Preventing MySQL Injection by Anonymous Monk

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