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FFI::isNull

(PHP 7 >= 7.4.0)

FFI::isNull — Checks whether a FFI\CData is a null pointer

说明

public static FFI::isNull ( FFI\CData &$ptr ) : bool

Checks whether a FFI\CData is a null pointer.

参数

ptr

The handle of the pointer to a C data structure.

返回值

Returns whether a FFI\CData is a null pointer.