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ConnPool

ConnPool

用连接池(ConnPool)管理 Connection ，有很多现成的做法。就是不关闭 Connection，或每几个小时关闭一次。

The assertion at the bottom of the code fails when the PHP utility function get_class returns ConnPool and not ConnPoolAS400.

The ConnPoolAS400 subclass extends the ConnPool class and provides its own version of the $klass property .