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Carson McDonald's Blog:
PHP MySQLi and Multiple Prepared Statements
February 15, 2010 @ 13:29:28

When Carson McDonald tried to get multiple prepared statements to work in his MySQLi code for his application, he got a "commands out of sync" error. Luckily, he's found a solution thanks to the store result.

Details about this error can be found in the mysql docs. Reading those details makes it clear that the result sets of a prepared statement execution need to be fetched completely before executing another prepared statement on the same connection.

He gives code snippets that are "before" and "after" examples of what he had to change to get things working. Each time its executed, the "store_result" call is made and the result set is pulled out of the prepared statement.

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