Php/docs/ffi.memcmp
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FFI::memcmp
(PHP 7 >= 7.4.0)
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.