Looping through variables using concatenation with PHP

Recently a friend was given the task of ordering a group of variables that would be similiar to this:

Group of ordered PHP variables
1 2 3 4	$var1 = 10; $var2 = 20; $var3 = 30; $var4 = 40

As you can see these items are not in array, and although it would be a best practice to have the group in array these are unchangeable, possibly an output from an existing system. What does need to be done is place them into an array using concatenation and a simple loop. Below is the loop to do such:

//Denotes that the group of vars starts at 1 i.e. $var1
$x=1;
//this specifies the first part of the var name
$varname= 'var';
//using the concatonation on a variable name, and checking if it exists
while (isset(${$varname.$x}) && $tmparr = ${$varname.$x})
{
	//the pre-assigned $tmpvar from the loop is then placed into an array
	$theArray[$x-1] = $tmpvar;
	//increments for the next loop so $var2 is used instead of $var1 repeatedly
	$x++;
}
 
//this will then output your populated array.
print_r($theArray);

This will output a nice array of items, which you can now use and manipulate a lot easier than the original group of variables.

johnlevis
Posted at 2012-05-10 19:36:31
Very good article thanks for all the great infomation on your website concord california florist
Reply to comment
lawn rolling rochester ny
Posted at 2012-03-05 15:44:07
hey buddy,this is one of the best posts that I’ve ever seen; you may include some more ideas in the same theme. I’m still waiting for some interesting thoughts from your side in your next post
lawn rolling rochester ny
Reply to comment
Firstrowstart
Posted at 2012-01-21 21:14:59
Your knowledge of this subject comes through clearly in this article. I love to read this kind of articles, I hope you will update it. Thank you for sharing it with me.
honda car insurance
Reply to comment
- farooq
  Posted at 2012-04-18 21:50:21
  Thanks for sharing. i really appreciate it that you shared with us such a informative post... Baseball Umpire videos
  Reply to comment
- jordanadelpha
  Posted at 2012-02-08 05:37:23
  Really appreciate this wonderful post that you have provided for us. I assure this would be beneficial for most of the people.
  MBA dissertation
  buy essay online
  Custom Essay
  dissertation service
  dissertation writing service
  Reply to comment
- thomasfernandus
  Posted at 2012-02-08 05:35:46
  I could tell how great you are in your field of interest. You could relate in each detail very well
  dissertation writers
  Reply to comment
Bomblawter
Posted at 2012-01-17 21:36:16
I am researching this topic for use in a future business I am thinking about starting. Thank you for this information, it has been educational and helpful to me.
buy backlinks
Reply to comment
Happprze
Posted at 2012-01-16 23:15:18
I have been interested in this topic for quite some time. I have been researching it for a couple of hours and found your post to be very interesting. Cheers.
Presentation Coaching
Reply to comment
Sorrwman
Posted at 2012-01-15 21:16:21
I am find information on this topic as I am working on a business project. Thank you posting relative information and its now becoming easier to complete this project.
Herbal Incense
Reply to comment
TheTimenwes
Posted at 2012-01-12 18:53:23
This is a terrific article, and I would like more information if you have any. I am fascinated with this topic and your post has been one of the best I have read.
Press Release Distribution
Reply to comment
Wentplace
Posted at 2012-01-11 18:17:01
Your article has a lot of great information and it has really helped me with my paper for a class I am taking. Do you have any other posts about this topic?
Lawyer Marketing
Reply to comment
Anonymous
Posted at 2010-11-22 05:35:34
puta me cago en todos que leen esto puf!
son una mierda carajo
Reply to comment
Anonymous
Posted at 2010-11-22 05:34:19
gfgfgfhjgghjfj :sad: porqueria carajo y mierda
Reply to comment

Buy me a beer or a book?

Looping through variables using concatenation with PHP

Post your comments...

Free Downloads

Udjamaflip Areas

Great People...

User Login