The other value in using the abstraction layers of the PEAR DB module and PDO is that you can use the? Operator in your SQL statements.

使用PEAR DB模块和pdo抽象层的另一个价值在于您可以在sql语句中使用？操作符。

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A new mobile operator context with two partitioned use cases and a new actor (Simpay Ltd.) has been derived from the higher abstraction level.

带有两段用例和一个新参与者(Simpay有限公司)的新的移动操作者语境已经由更高抽象层派生出来。

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