FFI::memcmp

(PHP 7 >= 7.4.0, PHP 8)

FFI::memcmpCompares memory areas

Description

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.

Parameters

ptr1

The start of one memory area.

ptr2

The start of another memory area.

size

The number of bytes to compare.

Return Values

Returns < 0 if the contents of the memory area starting at ptr1 are considered less than the contents of the memory area starting at ptr2, > 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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