Description:
------------
---
From manual page: http://www.php.net/mysqli-stmt.attr-set#refsect1-mysqli-
stmt.attr-set-parameters
---

The current documentation says that "MYSQLI_STMT_ATTR_UPDATE_MAX_LENGTH - If set 
to 1, causes mysqli_stmt_store_result() to update the metadata MYSQL_FIELD-
>max_length value."

This is a mis-feature caused by the MySQL documentation being incorrect. The 
field was described as a boolean but was actually being used as a long. This has 
been fixed in MySQL.

http://bugs.mysql.com/bug.php?id=16144

It also appears to be fixed in MySQLi (lots of code surrounded by 
MYSQL_VERSION_ID >= 50107) however:

1) The documentation has not been updated.
2) Setting any value other than 1 appears to have no effect.


I've raised this as a documentation problem as from my reading of the MySQLi 
code I think the parameter MYSQLI_STMT_ATTR_UPDATE_MAX_LENGTH should be setting 
the maximum field length returned by MySQLi, however that functionality also 
appears not to be working, so will retest once the documentation reflects the 
current code.



Test script:
---------------
Details of how to reproduce are here:

http://stackoverflow.com/questions/11913818/php-massive-memory-usage-for-sql-query

I can provide a standalone script if required, but as this is a documentation problem first, I haven't yet.