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    FFI::memcmp

    (PHP 7 >= 7.4.0, PHP 8)

    FFI::memcmp — Compares memory areas

    説明

    public static FFI::memcmp(string|FFI\CData &$ptr1, string|FFI\CData &$ptr2, int $size): int

    Compares size bytes from the memory areas ptr1 and ptr2. Both ptr1 and ptr2 can be any native data structures (FFI\CData) or PHP strings.

    パラメータ

    ptr1

    The start of one memory area.

    ptr2

    The start of another memory area.

    size

    The number of bytes to compare.

    戻り値

    Returns a value less than 0 if the contents of the memory area starting at ptr1 are considered less than the contents of the memory area starting at ptr2, a value greater than 0 if the contents of the first memory area are considered greater than the second, and 0 if they are equal.

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