mt_rand --- random number

ichimac · May 5, 2009

I using this function to generate a random number it work awesome however I will like know if there is a way to find out what was the previous number that function created. I will most grateful I could get some help whit this

$min = 1;
$max = 238;
$disallowed = array(4,5,6,8,9,10,12,13,18,19,20,23);

function mt_rand_n($min="1",$max,$disallowed) {
if (!is_array($disallowed)) return false;
$numbers = array_values(array_diff(range($min,$max),$disallowed));
if (count($numbers) < 1) return false;
return $numbers[mt_rand(0,count($numbers) - 1)];
}

$id_rand = mt_rand_n($min, $max, $disallowed);

laserlight · May 5, 2009

ichimac wrote:
I will like know if there is a way to find out what was the previous number that function created

Store it?

ichimac · May 5, 2009

pretty good idea but I really don't want to do it like that because then the table could be pretty big lol....

Weedpacket · May 5, 2009

That depends on what you're trying to do.

laserlight · May 5, 2009

ichimac wrote:
pretty good idea but I really don't want to do it like that because then the table could be pretty big lol....

Then store the seed (i.e., you should seed the PRNG yourself) and regenerate the sequence until the desired point.

Weedpacket wrote:
That depends on what you're trying to do.

I agree. What are you trying to do?

ichimac · May 5, 2009

because what I'm trying to do is this:
the function will created a random number i put that random number and a mysql string to call a user profile and then gives you the option to post a comment, but the way it is at the moment that comment goes to next random number generated not the current one, for example if have user_id 8, but next number coming is 23 the comment goes to user 23 not 8.

I hope it make sense

laserlight · May 5, 2009

Store the random number generated in a session, then retrieve it when you want to store the comment. Or, since you are presumably retrieving data based on this random number and then displaying the data to the user along with the comment form, you can also store the random number in a hidden form field.

ichimac · May 5, 2009

dude you are a genius I'll try that

nrg_alpha · May 5, 2009

ichimac;10913494 wrote:
function mt_rand_n($min="1",$max,$disallowed) {
....

Default function arguments should be listed last, not first (note example #5 and #6).

ichimac · May 6, 2009

i try using bouth of your solutions but I still have the same problem.. this is the all code for the page maybe I'm doing something wrong

<?php
require_once("includes/session.php");
include('includes/connection.inc.php');
include('includes/corefuncs.php');
$conn = dbConnect('query');

$min = 42;
$max = 118;
$disallowed = array(117);

function mt_rand_n($min="1",$max,$disallowed) {
if (!is_array($disallowed)) return false;
$numbers = array_values(array_diff(range($min,$max),$disallowed));
if (count($numbers) < 1) return false;
return $numbers[mt_rand(0,count($numbers) - 1)];
}

$id_rand = mt_rand_n($min, $max, $disallowed);

$sql = "SELECT feed_id,user_nickname,gender,image_normal,user_age,user_location,user_status FROM feed WHERE feed_id='$id_rand' ";
$result = mysql_query($sql) or die(mysql_error());
$row = mysql_fetch_assoc($result);

?>
<div id="dude">
<form id="rating" name="rating" method="post" >
<input type="radio" name="rating" value="1" onClick="this.form.submit()" />Good
<input type="radio" name="rating" value="2" onClick="this.form.submit()" />Really Good
<input type="radio" name="rating" value="3" onClick="this.form.submit()" />Awesome
</p>
</form>

<form id="comment" name="comment" method="post">
<label for="article" class="style2">Que cuentas</label>
feed_id : <?php echo $row['feed_id']; ?>
<p><textarea name="article" cols="35" rows="4" class="style3" id="article"></textarea></p>
<p><input type="submit" name="comment" id="comment" value="comment" />
<input name="message_for" type="hidden" id="message_for" value="<?php echo $row['feed_id'];?>"/>
</p>
</form>
<?php
//**************************************************************************
if (array_key_exists('comment', $_POST)) {

// create database connection
$conn = dbConnect('admin');
// remove backslashes
nukeMagicQuotes();

// prepare an array of expected items
$expected = array('carry_user_id','feed_id','article', 'message_for');
// make $POST data safe for insertion into database
foreach ($POST as $key => $value) {
if (in_array($key, $expected)) {
${$key} = mysql_real_escape_string($value);
}
}

// initialize error array
$comment_message = array();
// check length of usecomment

if (empty($article)) {
$comment_message[] = 'Please enter your comment';
}

//if (!$comment_message) {
	if ($row['feed_id'] ) {
		echo $row['feed_id'];

// prepare the SQL query
$sql_comment = "INSERT INTO journal (carry_user_id, article, created, message_for)
     			VALUES('$user_id', '$article', NOW(),'{$row['feed_id']}')";

// process the query
$comment_result = mysql_query($sql_comment) or die(mysql_error());
 		}

}
//******************************************************************
?>
</td></tr><tr bgcolor="#CCCCCC">
<th align="left" valign="top" bgcolor="#FFFFFF" >

  </th>
  <td align="left" valign="bottom" bgcolor="#FFFFFF">

  </td>
</tr>

</table>

</div>
<br class="clearfloat" />
<?php include('includes/footer.php'); ?>

ichimac · May 6, 2009

sorry about the previous message the code is all one color i took some screenshots I think this is better

laserlight · May 6, 2009

Please post your PHP code in [php][/php] bbcode tags.

ichimac · May 6, 2009

so that's how you do it ...thank you very much

<?php
require_once("includes/session.php");
include('includes/connection.inc.php');
include('includes/corefuncs.php');
$conn = dbConnect('query');


$min = 42;
$max = 118;
$disallowed = array(117);

function mt_rand_n($min="1",$max,$disallowed) {
if (!is_array($disallowed)) return false;
$numbers = array_values(array_diff(range($min,$max),$disallowed));
if (count($numbers) < 1) return false;
return $numbers[mt_rand(0,count($numbers) - 1)];
}

$id_rand = mt_rand_n($min, $max, $disallowed);

$sql = "SELECT feed_id,user_nickname,gender,image_normal,user_age,user_location,user_status FROM feed WHERE feed_id='$id_rand' ";
$result = mysql_query($sql) or die(mysql_error());
$row = mysql_fetch_assoc($result);


?>
<div id="dude">
<form id="rating" name="rating" method="post" >
<input type="radio" name="rating" value="1" onClick="this.form.submit()" />Good
<input type="radio" name="rating" value="2" onClick="this.form.submit()" />Really Good
<input type="radio" name="rating" value="3" onClick="this.form.submit()" />Awesome
</p>
</form>

<p><?php echo $row['user_nickname']; ?> / <?php echo $row['user_age'];?> / <?php echo $row['user_status'];?>/
<?php echo $row['user_location'];?></p>
<img src="<?php echo $row['image_normal']; ?>" />
<p><?php echo $row['user_feed']; ?></p></td>
<td width="83" align="left" valign="top" bgcolor="#FFFFFF">
feed_id : <?php echo $row['feed_id']; ?>

<form id="comment" name="comment" method="post">
<label for="article" class="style2">Que cuentas</label>
feed_id : <?php echo $row['feed_id']; ?>
<p><textarea name="article" cols="35" rows="4" class="style3" id="article"></textarea></p>
<p><input type="submit" name="comment" id="comment" value="comment" />
<input name="message_for" type="hidden" id="message_for" value="<?php echo $row['feed_id'];?>"/>
</p>
</form>
<?php
//**************************************************************************
if (array_key_exists('comment', $_POST)) {

// create database connection
$conn = dbConnect('admin');
// remove backslashes
nukeMagicQuotes();

// prepare an array of expected items
$expected = array('carry_user_id','feed_id','article', 'message_for');
// make $_POST data safe for insertion into database
foreach ($_POST as $key => $value) {
if (in_array($key, $expected)) {
${$key} = mysql_real_escape_string($value);
}
}

// initialize error array
$comment_message = array();
// check length of usecomment

if (empty($article)) {
$comment_message[] = 'Please enter your comment';
}

//if (!$comment_message) {
if ($row['feed_id'] ) {
echo $row['feed_id'];

// prepare the SQL query
$sql_comment = "INSERT INTO journal (carry_user_id, article, created, message_for)
VALUES('$user_id', '$article', NOW(),'{$row['feed_id']}')";

// process the query
$comment_result = mysql_query($sql_comment) or die(mysql_error());
}
}
//******************************************************************
?>
</td></tr><tr bgcolor="#CCCCCC">
<th align="left" valign="top" bgcolor="#FFFFFF" >

</th>
<td align="left" valign="bottom" bgcolor="#FFFFFF">

</td>
</tr>
</table>

</div>
<br class="clearfloat" />
<?php include('includes/footer.php'); ?>

ichimac · May 11, 2009

i try to store that value on a database but for some reason it keeps storing the new value not the old one

mt_rand --- random number

Iichimac

laserlight

Iichimac

Weedpacket

laserlight

Iichimac

laserlight

Iichimac

Nnrg_alpha

Iichimac

Iichimac

laserlight

Iichimac

Iichimac