openssl_rand(1) [netbsd man page]

RAND(1) 							      OpenSSL								   RAND(1)

NAME

       rand - generate pseudo-random bytes

LIBRARY

       libcrypto, -lcrypto

SYNOPSIS

       openssl rand [-out file] [-rand file(s)] [-base64] [-hex] num

DESCRIPTION

       The rand command outputs num pseudo-random bytes after seeding the random number generator once.  As in other openssl command line tools,
       PRNG seeding uses the file $HOME/.rnd or .rnd in addition to the files given in the -rand option.  A new $HOME/.rnd or .rnd file will be
       written back if enough seeding was obtained from these sources.

OPTIONS

       -out file
	   Write to file instead of standard output.

       -rand file(s)
	   Use specified file or files or EGD socket (see RAND_egd(3)) for seeding the random number generator.  Multiple files can be specified
	   separated by a OS-dependent character.  The separator is ; for MS-Windows, , for OpenVMS, and : for all others.

       -base64
	   Perform base64 encoding on the output.

       -hex
	   Show the output as a hex string.

SEE ALSO

       RAND_bytes(3)

1.0.1i								    2009-07-20								   RAND(1)

RAND(3) 								 1								   RAND(3)

rand - Generate a random integer

SYNOPSIS

       int rand (void  )

DESCRIPTION

       int rand (int  $min, int  $max)

	If  called  without  the  optional $min, $max arguments rand(3) returns a pseudo-random integer between 0 and getrandmax(3). If you want a
       random number between 5 and 15 (inclusive), for example, use rand(5, 15).

       Caution

	      This function does not generate cryptographically secure values, and should not be used for cryptographic purposes. If  you  need  a
	      cryptographically secure value, consider using random_int(3), random_bytes(3), or openssl_random_pseudo_bytes(3) instead.

       Note

	       On  some  platforms  (such  as Windows), getrandmax(3) is only 32767. If you require a range larger than 32767, specifying $min and
	      $max will allow you to create a range larger than this, or consider using mt_rand(3) instead.

PARAMETERS

	      o $min
		- The lowest value to return (default: 0)

	      o $max
		- The highest value to return (default: getrandmax(3))

RETURN VALUES

	A pseudo random value between $min (or 0) and $max (or getrandmax(3), inclusive).

EXAMPLES

       Example #1

	      rand(3) example

	      <?php
	      echo rand() . "
";
	      echo rand() . "
";

	      echo rand(5, 15);
	      ?>

	      The above example will output something similar to:

	      7771
	      22264
	      11

SEE ALSO

       srand(3), getrandmax(3), mt_rand(3), random_int(3), random_bytes(3), openssl_random_pseudo_bytes(3).

PHP Documentation Group 														   RAND(3)