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wp_rand() - more randy rands

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git-svn-id: http://svn.automattic.com/wordpress/trunk@8728 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
ryan 2008-08-25 17:52:28 +00:00
parent 3d60c3aeb2
commit dccf7edf8e
1 changed files with 43 additions and 1 deletions
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44
wp-includes/pluggable.php
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@ -1351,11 +1351,53 @@ function wp_generate_password($length = 12, $special_chars = true) {
$password = '';
for ( $i = 0; $i < $length; $i++ )
$password .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
$password .= substr($chars, wp_rand(0, strlen($chars) - 1), 1);
return $password;
}
endif;
if ( !function_exists('wp_rand') ) :
/**
* Generates a random number
*
* @since 2.6.2
*
* @param int $min Lower limit for the generated number (optional, default is 0)
* @param int $max Upper limit for the generated number (optional, default is 4294967295)
* @return int A random number between min and max
*/
function wp_rand( $min = 0, $max = 0 ) {
global $rnd_value;
$seed = get_option('random_seed');
// Reset $rnd_value after 14 uses
// 32(md5) + 40(sha1) + 40(sha1) / 8 = 14 random numbers from $rnd_value
if ( strlen($rnd_value) < 8 ) {
$rnd_value = md5( uniqid(microtime() . mt_rand(), true ) . $seed );
$rnd_value .= sha1($rnd_value);
$rnd_value .= sha1($rnd_value . $seed);
$seed = md5($seed . $rnd_value);
update_option('random_seed', $seed);
}
// Take the first 8 digits for our value
$value = substr($rnd_value, 0, 8);
// Strip the first eight, leaving the remainder for the next call to wp_rand().
$rnd_value = substr($rnd_value, 8);
$value = abs(hexdec($value));
// Reduce the value to be within the min - max range
// 4294967295 = 0xffffffff = max random number
if ( $max != 0 )
$value = $min + (($max - $min + 1) * ($value / (4294967295 + 1)));
return abs(intval($value));
}
endif;
if ( !function_exists('wp_set_password') ) :
/**
* Updates the user's password with a new encrypted one.