Re: [PHP] Random number generator
Hi
you can use PHP rand() function for selecting a random number between 1 to
100.
http://www.senpai-it.com/dedicated_servers.php Senpai IT Solutions
Dedicated Server at low cost
WEISD wrote:
On a php web page I want to generate a random number between say 1 and 10
and then use that number to reference a particular file in an include tag.
?php include('GeneratedNumber.html'); ?
Is there an easy way to do this?
Thanks
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Re: [PHP] Random number generator
On Thu, Nov 6, 2008 at 3:52 AM, Amisha_Sharma [EMAIL PROTECTED] wrote: Hi you can use PHP rand() function for selecting a random number between 1 to 100. Amisha, Welcome to the list, but please don't top post. For a list of all the guidelines for the official PHP lists, including this one, you can check it out here: http://www.php.net/reST/php-src/README.MAILINGLIST_RULES -- /Daniel P. Brown http://www.parasane.net/ [EMAIL PROTECTED] || [EMAIL PROTECTED] Ask me about our current hosting/dedicated server deals! -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Random number generator
On Thu, Nov 6, 2008 at 10:53 AM, WEISD [EMAIL PROTECTED] wrote:
Gary M. Josack [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
Stephen wrote:
On a php web page I want to generate a random number between say 1 and
10 and then use that number to reference a particular file in
an include tag.
?php include('GeneratedNumber.html'); ?
Is there an easy way to do this?
Get the time and use the last digit converting 0 to 10.
Stephen
rand(1, 10);
Thanks for the help!!
php's random number generator seems to have favorite numbers.
rand(1, 10); produces 10 3, 90% of the time
That is strange. I get pretty balanced results on this computer.
?php
$histogram = array_fill(1, 10, 0);
$iterations = 20;
for ($i = 0; $i $iterations; ++$i) {
++$histogram[round(rand(1, 10))];
}
print_r($histogram);
?
Array
(
[1] = 19991 (10.00%)
[2] = 19981 (9.99%)
[3] = 20011 (10.01%)
[4] = 19998 (10.00%)
[5] = 20049 (10.02%)
[6] = 20008 (10.00%)
[7] = 19983 (9.99%)
[8] = 19986 (9.99%)
[9] = 20007 (10.00%)
[10] = 19986 (9.99%)
)
Andrew
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Re: [PHP] Random number generator
Gary M. Josack [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
Stephen wrote:
On a php web page I want to generate a random number between say 1 and
10 and then use that number to reference a particular file in
an include tag.
?php include('GeneratedNumber.html'); ?
Is there an easy way to do this?
Get the time and use the last digit converting 0 to 10.
Stephen
rand(1, 10);
Thanks for the help!!
php's random number generator seems to have favorite numbers.
rand(1, 10); produces 10 3, 90% of the time
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RE: [PHP] Random number generator
[snip] ?php $number = rand(1, 10); include(footer$number.html); ? You can see it in action here at the bottom of the page there is a footer. Each footer is the same right now except I have numbered them for testing. As I refresh the page, I get footer10 almost always with an occasional 2 or 4 here and there... [/snip] So there fore it is random, or at least as random as it can be. If you want it to be random but not be the same as the last value generated you have to do some more complex programming. But then you have really made things less random. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Random number generator
On Thu, 11/6/08, WEISD [EMAIL PROTECTED] wrote:
That is strange. I get pretty balanced results on this
computer.
?php
$histogram = array_fill(1, 10, 0);
$iterations = 20;
for ($i = 0; $i $iterations; ++$i) {
++$histogram[round(rand(1, 10))];
}
print_r($histogram);
?
Andrew
Simple code,
?php
$number = rand(1, 10);
include(footer$number.html); ?
You can see it in action here at the bottom of the page
there is a footer.
Each footer is the same right now except I have numbered
them for testing.
As I refresh the page, I get footer10 almost always with
an occasional 2 or
4 here and there...
http://www.weisd.com/store2/WINHD-9022.php
Computer functions to generate random numbers are not designed to do what their
name suggests.
Software testing requires repeatability, and this includes random number
generation.
Without knowing how PHP seeds the generator it is difficult to predict what it
will do.
I still think taking the last digit of the current time is your best solution.
Stephen
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Re: [PHP] Random number generator
WEISD wrote:
That is strange. I get pretty balanced results on this computer.
?php
$histogram = array_fill(1, 10, 0);
$iterations = 20;
for ($i = 0; $i $iterations; ++$i) {
++$histogram[round(rand(1, 10))];
}
print_r($histogram);
?
Andrew
Simple code,
?php
$number = rand(1, 10);
include(footer$number.html); ?
You can see it in action here at the bottom of the page there is a
footer. Each footer is the same right now except I have numbered them
for testing.
As I refresh the page, I get footer10 almost always with an
occasional 2 or 4 here and there...
http://www.weisd.com/store2/WINHD-9022.php
Which PHP version are you running? After 4.2.0, it should be random
each call. Otherwise, use srand();
Thank you,
Micah Gersten
onShore Networks
Internal Developer
http://www.onshore.com
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Re: [PHP] Random number generator
Computer functions to generate random numbers are not designed to do what their name suggests. Software testing requires repeatability, and this includes random number generation. Without knowing how PHP seeds the generator it is difficult to predict what it will do. I still think taking the last digit of the current time is your best solution. Stephen I like the idea of using the time but don't like the idea of spending the rest of the day learning how to parse out the numbers I need from the time... -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Random number generator
That is strange. I get pretty balanced results on this computer.
?php
$histogram = array_fill(1, 10, 0);
$iterations = 20;
for ($i = 0; $i $iterations; ++$i) {
++$histogram[round(rand(1, 10))];
}
print_r($histogram);
?
Andrew
Simple code,
?php
$number = rand(1, 10);
include(footer$number.html); ?
You can see it in action here at the bottom of the page there is a footer.
Each footer is the same right now except I have numbered them for testing.
As I refresh the page, I get footer10 almost always with an occasional 2 or
4 here and there...
http://www.weisd.com/store2/WINHD-9022.php
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Re: [PHP] Random number generator
WEISD wrote: Computer functions to generate random numbers are not designed to do what their name suggests. Software testing requires repeatability, and this includes random number generation. Without knowing how PHP seeds the generator it is difficult to predict what it will do. I still think taking the last digit of the current time is your best solution. Stephen I like the idea of using the time but don't like the idea of spending the rest of the day learning how to parse out the numbers I need from the time... 1. change the number to a string: $t = (string) time(); 2. chop off the last char of the string: $char = substr($t, -1); 3. you're done...: include footer$char.html; -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Random number generator
WEISD wrote:
Computer functions to generate random numbers are not designed to do
what their name suggests.
Software testing requires repeatability, and this includes random
number generation.
Without knowing how PHP seeds the generator it is difficult to predict
what it will do.
I still think taking the last digit of the current time is your best
solution.
Stephen
I like the idea of using the time but don't like the idea of spending
the rest of the day learning how to parse out the numbers I need from
the time...
Really, you think this step is difficult?
Try looking at the page http://php.net/date it will give you all that you need.
$second = (int)date('s');
This will give you the current second of the current minute of the current
Anyways.
Take that and run it through a modulo then add one to keep it within the 1-10.
?php
$second = (((int)date('s')) % 10) +1;
echo $second;
?
This should do
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Jim Lucas
Some men are born to greatness, some achieve greatness,
and some have greatness thrust upon them.
Twelfth Night, Act II, Scene V
by William Shakespeare
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Re: [PHP] Random number generator
At 10:30 AM -0600 11/6/08, WEISD wrote: You can see it in action here at the bottom of the page there is a footer. Each footer is the same right now except I have numbered them for testing. As I refresh the page, I get footer10 almost always with an occasional 2 or 4 here and there... http://www.weisd.com/store2/WINHD-9022.php Not me -- I get a normal distribution. Cheers, tedd -- --- http://sperling.com http://ancientstones.com http://earthstones.com -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Random number generator
http://www.weisd.com/store2/WINHD-9022.php Not me -- I get a normal distribution. Cheers, tedd Thanks Tedd, That is because it is using time now and not rand... -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Random number generator
Stephen wrote:
On Thu, 11/6/08, WEISD [EMAIL PROTECTED] wrote:
That is strange. I get pretty balanced results on this
computer.
?php
$histogram = array_fill(1, 10, 0);
$iterations = 20;
for ($i = 0; $i $iterations; ++$i) {
++$histogram[round(rand(1, 10))];
}
print_r($histogram);
?
Andrew
Simple code,
?php
$number = rand(1, 10);
include(footer$number.html); ?
You can see it in action here at the bottom of the page
there is a footer.
Each footer is the same right now except I have numbered
them for testing.
As I refresh the page, I get footer10 almost always with
an occasional 2 or
4 here and there...
http://www.weisd.com/store2/WINHD-9022.php
Computer functions to generate random numbers are not designed to do what
their name suggests.
Software testing requires repeatability, and this includes random number
generation.
Without knowing how PHP seeds the generator it is difficult to predict what
it will do.
I still think taking the last digit of the current time is your best solution.
Stephen
The PHP developers understood the random problem and the need for
predictability, so they did 2 things.
1. Randomly seed the random number generator every time
2. Allow you to set the seed for predictability
http://us.php.net/srand
Thank you,
Micah Gersten
onShore Networks
Internal Developer
http://www.onshore.com
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Re: [PHP] Random number generator
1. change the number to a string: $t = (string) time(); 2. chop off the last char of the string: $char = substr($t, -1); 3. you're done...: include footer$char.html; Time wins certainly produces better results, at least for what I am doing, than rand... Thanks all for your input... Nice NG here -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Random number generator
At 11:35 AM -0600 11/6/08, WEISD wrote: http://www.weisd.com/store2/WINHD-9022.php Not me -- I get a normal distribution. Cheers, tedd Thanks Tedd, That is because it is using time now and not rand... Just as point of notice. When I ask a question and provide a url, I keep the url there as-is until the question is answered -- at which time I remove the example. If the url is not there, then people can assume that the problem is solved. This allows people to see the problem and prevents wasting time. Cheers, tedd -- --- http://sperling.com http://ancientstones.com http://earthstones.com -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Random number generator
On a php web page I want to generate a random number between say 1 and 10
and then use that number to reference a particular file in an include tag.
?php include('GeneratedNumber.html'); ?
Is there an easy way to do this?
Thanks
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Re: [PHP] Random number generator
On a php web page I want to generate a random number
between say 1 and 10
and then use that number to reference a particular file in
an include tag.
?php include('GeneratedNumber.html'); ?
Is there an easy way to do this?
Get the time and use the last digit converting 0 to 10.
Stephen
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Re: [PHP] Random number generator
Here's how you generate a random number:
http://us.php.net/manual/en/function.rand.php
There are a number of things you can do with that to select a random file and
include it. Have an associative array where the random number matches an
array key and the value is the filename you want, is one method.
Just starting out with PHP or is this a homework assignment? :)
-TG
- Original Message -
From: WEISD [EMAIL PROTECTED]
To: php-general@lists.php.net
Date: Wed, 5 Nov 2008 12:41:21 -0600
Subject: [PHP] Random number generator
On a php web page I want to generate a random number between say 1 and 10
and then use that number to reference a particular file in an include tag.
?php include('GeneratedNumber.html'); ?
Is there an easy way to do this?
Thanks
--
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Re: [PHP] Random number generator
Just starting out, thanks.
So,
?php
$number = rand(1, 10);
include('$number.html'); ?
I should have prefaced the question with, New to PHP...
TG [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
Here's how you generate a random number:
http://us.php.net/manual/en/function.rand.php
There are a number of things you can do with that to select a random file
and
include it. Have an associative array where the random number matches an
array key and the value is the filename you want, is one method.
Just starting out with PHP or is this a homework assignment? :)
-TG
- Original Message -
From: WEISD [EMAIL PROTECTED]
To: php-general@lists.php.net
Date: Wed, 5 Nov 2008 12:41:21 -0600
Subject: [PHP] Random number generator
On a php web page I want to generate a random number between say 1 and
10
and then use that number to reference a particular file in an include
tag.
?php include('GeneratedNumber.html'); ?
Is there an easy way to do this?
Thanks
--
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To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Random number generator
Stephen wrote:
On a php web page I want to generate a random number
between say 1 and 10
and then use that number to reference a particular file in
an include tag.
?php include('GeneratedNumber.html'); ?
Is there an easy way to do this?
Get the time and use the last digit converting 0 to 10.
Stephen
rand(1, 10);
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Re: [PHP] Random number generator
WEISD wrote:
Just starting out, thanks.
So,
?php
$number = rand(1, 10);
include('$number.html'); ?
I should have prefaced the question with, New to PHP...
TG [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
Here's how you generate a random number:
http://us.php.net/manual/en/function.rand.php
There are a number of things you can do with that to select a random
file and
include it. Have an associative array where the random number
matches an
array key and the value is the filename you want, is one method.
Just starting out with PHP or is this a homework assignment? :)
-TG
- Original Message -
From: WEISD [EMAIL PROTECTED]
To: php-general@lists.php.net
Date: Wed, 5 Nov 2008 12:41:21 -0600
Subject: [PHP] Random number generator
On a php web page I want to generate a random number between say 1
and 10
and then use that number to reference a particular file in an
include tag.
?php include('GeneratedNumber.html'); ?
Is there an easy way to do this?
Thanks
use double quotes instead of single quotes, else you will be trying to
literally include '$number.html'
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Re: [PHP] Random number generator
Umm I must notify you, just in case you don't know this, that you have to be
aware of the fact that the humanity haven't found a way to get a random
number (yet. they are working on it while I'm writing this..) (;
On Wed, Nov 5, 2008 at 9:43 PM, Gary M. Josack [EMAIL PROTECTED] wrote:
WEISD wrote:
Just starting out, thanks.
So,
?php
$number = rand(1, 10);
include('$number.html'); ?
I should have prefaced the question with, New to PHP...
TG [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
Here's how you generate a random number:
http://us.php.net/manual/en/function.rand.php
There are a number of things you can do with that to select a random file
and
include it. Have an associative array where the random number matches an
array key and the value is the filename you want, is one method.
Just starting out with PHP or is this a homework assignment? :)
-TG
- Original Message -
From: WEISD [EMAIL PROTECTED]
To: php-general@lists.php.net
Date: Wed, 5 Nov 2008 12:41:21 -0600
Subject: [PHP] Random number generator
On a php web page I want to generate a random number between say 1 and
10
and then use that number to reference a particular file in an include
tag.
?php include('GeneratedNumber.html'); ?
Is there an easy way to do this?
Thanks
use double quotes instead of single quotes, else you will be trying to
literally include '$number.html'
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Re: [PHP] Random number generator
On Wed, 2008-11-05 at 12:41 -0600, WEISD wrote:
On a php web page I want to generate a random number between say 1 and 10
and then use that number to reference a particular file in an include tag.
?php include('GeneratedNumber.html'); ?
Is there an easy way to do this?
Thanks
include manual.php;
lesson = new manual();
lesson-math-rand-read();
Ash
www.ashleysheridan.co.uk
