Efficiency. If you use placeholders, you only need to prepare() the statement once (at which point the db engine analyzes it and figures out how to most efficiently process the query) and can then execute it repeatedly, passing in different parameters each time. Without placeholders, the query has to be re-prepared each time it is executed.

In reply to Re: Re: Re: foreach within a foreach by dsheroh
in thread foreach within a foreach by Spenser

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