Description
int
mt_rand
( [int min, int max])
By
default
,
PHP
uses
the
libc
random
number
generator
with
the
rand(
)
function
.
mt_rand(
)
function
is
a
drop-in
replacement
for
this
.
It
uses
a
random
number
generator
with
known
characteristics
,
the
Mersenne
Twister
,
which
will
produce
random
numbers
that
should
be
suitable
for
seeding
some
kinds
of
cryptography
(
see
the
home
pages
for
details
)
and
is
four
times
faster
than
what
the
average
libc
provides
.
The
Homepage
of
the
Mersenne
Twister
can
be
found
at
http
:
/
/www.math.keio.ac.jp
/
~matumoto
/
emt.html
,
and
an
optimized
version
of
the
MT
source
is
available
from
http
:
/
/www.scp.syr.edu
/
~marc
/
hawk
/
twister.html
.