PDO::fetchAll vs. PDO::fetch in a loop
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Published on 2010-05-05T04:31:40Z
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Just a quick question.
Is there any performance difference between using PDO::fetchAll() and PDO::fetch() in a loop (for large result sets)?
I'm fetching into objects of a user-defined class, if that makes any difference.
My initial uneducated assumption was that fetchAll might be faster because PDO can perform multiple operations in one statement while mysql_query can only execute one. However I have little knowledge of PDO's inner workings and the documentation doesn't say anything about this, and whether or not fetchAll() is simply a PHP-side loop dumped into an array.
Any help?
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