FFI::memcmp
(PHP 7 >= 7.4.0, PHP 8)
FFI::memcmp — Compares memory areas
Description
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.