dpl22899 2012-10-01 03:27
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如何将PDO :: FETCH_CLASS与抽象类一起使用?

Is there a method to instantiate a child class with PDO::FETCH_CLASS based on retrieved data? Suppose that there exists an abstract class A, classes B and C that are implementations of A and a field on my table named classname that will be used to instantiate the right class. Is it possible?

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  • douyu0792 2012-10-01 04:43
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    Sounds like you need, PDO::FETCH_CLASSTYPE. From the manual:

    PDO::FETCH_CLASS: returns a new instance of the requested class, mapping the columns of the result set to named properties in the class. If fetch_style includes PDO::FETCH_CLASSTYPE (e.g. PDO::FETCH_CLASS | PDO::FETCH_CLASSTYPE) then the name of the class is determined from a value of the first column.

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