PHP RSS PHP RSS

Generate a value depending on algorith

Reply
1 2

•
•
Join Date: Jun 2009
Posts: 12
Reputation: coleguitajuan is an unknown quantity at this point 
Solved Threads: 0
coleguitajuan coleguitajuan is offline Offline
Newbie Poster

Generate a value depending on algorith

 
0
  #1
Jun 29th, 2009
Hi all!

Im trying to creat thecode for save a value into a variable ($sales_code) formed per 2 letters (VW, DF, RK or DI) depending on this algorithm: 79% of the time it's VW, 7% of the time it's DF, 7% of the time it's RK, 7% of the time it's DI.

could you give me a hand on this?

Thanks in advance!

Daniel
Reply With Quote Quick reply to this message  
•
•
Join Date: Jun 2009
Posts: 171
Reputation: Menster is an unknown quantity at this point 
Solved Threads: 22
Menster's Avatar
Menster Menster is offline Offline
Junior Poster

Re: Generate a value depending on algorith

 
0
  #2
Jun 29th, 2009 
$value = intval(rand(1, 100));
if ($value < 80)
{
$sales_code = 'VW';
} else if (($value > 79) && ($value <= 86)) {
$sales_code = 'DF';
} else if (($value > 86) && ($value <= 93)) {
$sales_code = 'RK';
} else if (($value > 93) && ($value <= 100)) {
$sales_code = 'DI';
}

Hi there, hope this code snippet helps. Based on a random int, so it's gonna be random, but by the law of averages it'll work for what you need.
$me = new Person();
if (isset($_COOKIE)){
$me->eat($_COOKIE);
} else { $me->starve(); }
Reply With Quote Quick reply to this message  
•
•
Join Date: Apr 2009
Posts: 821
Reputation: Airshow is on a distinguished road 
Solved Threads: 116
Airshow's Avatar
Airshow Airshow is offline Offline
Practically a Posting Shark

Re: Generate a value depending on algorith

 
0
  #3
Jun 29th, 2009
Depending on what input Coleguitajuan?

Airshow
50% of the solution lies in accurately describing the problem!
Reply With Quote Quick reply to this message  
•
•
Join Date: Jun 2009
Posts: 12
Reputation: coleguitajuan is an unknown quantity at this point 
Solved Threads: 0
coleguitajuan coleguitajuan is offline Offline
Newbie Poster

Re: Generate a value depending on algorith

 
0
  #4
Jun 29th, 2009
Menster, that is what needed, thank you! you rock!
Reply With Quote Quick reply to this message  
•
•
Join Date: Jun 2009
Posts: 12
Reputation: coleguitajuan is an unknown quantity at this point 
Solved Threads: 0
coleguitajuan coleguitajuan is offline Offline
Newbie Poster

Re: Generate a value depending on algorith

 
0
  #5
Jul 1st, 2009
Hi Menster,

Rand does not guarantee not to repeat a value twice during a 100 number sequence, so there is any other logic instead of using Rand ?

Thanks for your support
Reply With Quote Quick reply to this message  
•
•
Join Date: Jun 2009
Posts: 12
Reputation: coleguitajuan is an unknown quantity at this point 
Solved Threads: 0
coleguitajuan coleguitajuan is offline Offline
Newbie Poster

Re: Generate a value depending on algorith

 
0
  #6
Jul 2nd, 2009
Can you guyshave a solution without using the rand function??

thanks you!
Reply With Quote Quick reply to this message  
•
•
Join Date: Sep 2007
Posts: 1,456
Reputation: cwarn23 has a spectacular aura about cwarn23 has a spectacular aura about cwarn23 has a spectacular aura about 
Solved Threads: 136
cwarn23's Avatar
cwarn23 cwarn23 is offline Offline
Nearly a Posting Virtuoso

Re: Generate a value depending on algorith

 
0
  #7
Jul 2nd, 2009
•
•
•
•
Originally Posted by coleguitajuan View Post
Can you guyshave a solution without using the rand function??

thanks you!
Do you mean this?
php Syntax (Toggle Plain Text) 
  1. $value = 50; //input value
  2. if ($value < 80)
  3. {
  4. $sales_code = 'VW';
  5. } else if (($value > 79) && ($value <= 86)) {
  6. $sales_code = 'DF';
  7. } else if (($value > 86) && ($value <= 93)) {
  8. $sales_code = 'RK';
  9. } else if (($value > 93) && ($value <= 100)) {
  10. $sales_code = 'DI';
  11. }
Try not to bump 10 year old threads as it can be really annoying.
Like php then read my website at http://syntax.cwarn23.net/
Star-Trek-Atlantis - now that's what I call a movie ^_^
My favourite PC. - MacGyver Fan
Bad english note: dis-iz-2b4u
Reply With Quote Quick reply to this message  
•
•
Join Date: Jun 2009
Posts: 12
Reputation: coleguitajuan is an unknown quantity at this point 
Solved Threads: 0
coleguitajuan coleguitajuan is offline Offline
Newbie Poster

Re: Generate a value depending on algorith

 
0
  #8
Jul 2nd, 2009
No, the input must be a random, but the values from 1 to 100 cannot be repeated.

I am more thinking along the lines below, because rand is well too random:

1.) Get a count of all records for each sales_code. Lets say we call them $VW_total , $DF_total , $RK_total , $DI_total
2.) Get a total count for all sales_code + 1 (the +1 is for the new record that is going to be inserted). Lets call this total "$grand_total"

Let's see if this clarifies you.

Thanks in advance!
Reply With Quote Quick reply to this message  
•
•
Join Date: Sep 2007
Posts: 1,456
Reputation: cwarn23 has a spectacular aura about cwarn23 has a spectacular aura about cwarn23 has a spectacular aura about 
Solved Threads: 136
cwarn23's Avatar
cwarn23 cwarn23 is offline Offline
Nearly a Posting Virtuoso

Re: Generate a value depending on algorith

 
0
  #9
Jul 2nd, 2009
If you don't want a repeated result then the following code should do the job.
php Syntax (Toggle Plain Text) 
  1. <?php 
  2. $code_records=array('');
  3. //above line is only ever called once
  4.  
  5. function checkid() {
  6. global $code_records;
  7. $value = intval(rand(1, 100));
  8. $sales_code='';
  9. while (in_array($sales_code,$code_records)) {
  10. $value = intval(rand(1, 100));
  11. if ($value < 80)
  12. {
  13. $sales_code = 'VW';
  14. } else if (($value > 79) && ($value <= 86)) {
  15. $sales_code = 'DF';
  16. } else if (($value > 86) && ($value <= 93)) {
  17. $sales_code = 'RK';
  18. } else if (($value > 93) && ($value <= 100)) {
  19. $sales_code = 'DI';
  20. }
  21. if (!in_array($sales_code,$code_records)) {
  22.     $code_records[]=$sales_code;
  23.     break;
  24.     }
  25. }
  26. return $sales_code.'<br>';
  27. }
  28.  
  29. echo checkid();
  30. echo checkid();
  31. echo checkid();
  32. ?>
Try not to bump 10 year old threads as it can be really annoying.
Like php then read my website at http://syntax.cwarn23.net/
Star-Trek-Atlantis - now that's what I call a movie ^_^
My favourite PC. - MacGyver Fan
Bad english note: dis-iz-2b4u
Reply With Quote Quick reply to this message  
•
•
Join Date: Jun 2009
Posts: 197
Reputation: ayesha789 is an unknown quantity at this point 
Solved Threads: 3
ayesha789's Avatar
ayesha789 ayesha789 is offline Offline
Junior Poster

Re: Generate a value depending on algorith

 
0
  #10
Jul 2nd, 2009
Great Code , Its great for all
Ayesha
Reply With Quote Quick reply to this message  
Reply
1 2

Quick Reply to Thread
This thread is more than three months old.
Perhaps start a new thread instead?
•
•
•
•
•
•
•
•
Message:
•
•
•
•



Similar Threads
Other Threads in the PHP Forum
Thread Tools Search this Thread



apache api array beginner binary body broken cakephp checkbox class cms code computing cron curl database date date/time delete display dynamic echo email error file files filter folder form forms function functions gc_maxlifetime global google host href htaccess html image include insert ip javascript joomla limit link list login mail memmory memory menu mlm msqli_multi_query multiple mycodeisbad mysql navigation oop parameter parsing paypal pdf php problem query radio random recourse recursion regex remote script search seo server sessions sms snippet source space sql static syntax system table thesishelp tutorial update upload url validator variable video web webdesign wordpress xml youtube
About Us | Contact Us | Advertise | DaniWeb | Acceptable Use Policy | RSS Feed

©2003 - 2009 DaniWeb® LLC