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how to count an array?

Discuss how to count an array? in the PHP Coding forum on Codewalkers.
how to count an array? Having problems with a PHP script you are coding? This is the place to get help!

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  #1  
Old June 28th, 2002, 12:36 PM
chobo4ever chobo4ever is offline
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how to count an array?
my problem is: I have in my database 30 rows. what I want to do is make radiobuttons for every row, but AFTER THE 15th ROW I WANT TO WRITE THE OTHER 15 IN A NEW COLUMN. here is my code. right now it just lists the subjects and does not care how long the $row array is.

Code:
while($row = mysql_fetch_array($result)) 
			{

										echo "<tr><td><input type="checkbox" name="" . $row['nr'] . "" value="newsletter" border="0">"" . $row['subject'] . ""</td></tr>";
	    	   		}
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  #2  
Old June 28th, 2002, 03:18 PM
Taoism Taoism is offline
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RE: how to count an array?
php Code:
Original - php Code 
  1.  
  2. <?php
  3. //your code
  4. while($row = mysql_fetch_array($result)){
  5.   echo "<tr><td><input type="checkbox" name="" . $row['nr'] . "" value="newsletter" border="0">"" . $row['subject'] . ""</td></tr>";
  6. }
  7.  
  8. //my version 
  9. //something like this will work...
  10. while($row[]=mysql_fetch_array($result));
  11. for($x=0,$y=count($row)/2;$x<$y;$x++){
  12.   $out_table.='<tr>';
  13.   $out_table.='<td><input type="checkbox" name="'.$row[$x]['nr'].'" value="newsletter" border="0">"'.$row[$x]['subject'].'"</td>';
  14.   $out_table.='<td><input type="checkbox" name="'.$row[$x+$y]['nr'].'" value="newsletter" border="0">"'.$row[$x+$y]['subject'].'"</td>';
  15.   $out_table.='</tr>';
  16. }
  17. ?>



Cheers,
Keith.
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  #3  
Old June 28th, 2002, 03:26 PM
chobo4ever chobo4ever is offline
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RE: how to count an array?
thanks, good to know there is help out there ...
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  #4  
Old June 28th, 2002, 03:51 PM
chobo4ever chobo4ever is offline
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RE: how to count an array?
it basicly works. but because the for loop starts with $x=0, it writes in the second column the last subject of the first column again! but when I start with 1, the first subject is obviously lost. How can I solve this problem?

and at the end it writes two empty subjects which arent in the database. but look for yourself. here is the LINK.

thanks again
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  #5  
Old June 28th, 2002, 04:52 PM
Taoism Taoism is offline
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RE: how to count an array?
php Code:
Original - php Code 
  1.  
  2. <?php
  3. //remember this solution only works if there is an even number of rows.
  4. while($row[]=mysql_fetch_array($result));
  5. //get rid of the extra blank row added by the while loop
  6. unset($row[count($row)-1]);
  7. for($x=0,$y=count($row)/2;$x<$y;$x++){
  8.   $out_table.='<tr>';
  9.   $out_table.='<td><input type="checkbox" name="'.$row[$x]['nr'].'" value="newsletter" border="0">"'.$row[$x]['subject'].'"</td>';
  10.   $out_table.='<td><input type="checkbox" name="'.$row[$x+$y]['nr'].'" value="newsletter" border="0">"'.$row[$x+$y]['subject'].'"</td>';
  11.   $out_table.='</tr>';
  12. }
  13. ?>


Cheers,
Keith.
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  #6  
Old June 28th, 2002, 05:01 PM
chobo4ever chobo4ever is offline
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RE: how to count an array?
thx, worx now!
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