FFI::memcmp

(PHP 7 >= 7.4.0)

FFI::memcmp — Compares memory areas

Beschreibung

public static FFI::memcmp ( mixed &$ptr1 , mixed &$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.

Parameter-Liste

ptr1

The start of one memory area.

ptr2

The start of another memory area.

size

The number of bytes to compare.

Rückgabewerte

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.