Programming Forums > Web Development and Design > PHP

dark06 · Mar 28th, 2008, 3:53 AM

<? 

$c = $_POST['col'];

$r = $_POST['rw'];

?>

	

<? 

	for($cvchk = 1; $cchk<= $c; $cchk ++)

		{

			echo $cchk."<br>";

			

		for($rchk = 1; $rchk<= $r; $rchk ++)

				{ 

					echo $rchk." ";

				}

		}		

		

?>

i don't know what is wrong with this one
i want the output to become this one

1 2 3 4
2 3 4 1
3 4 1 2
4 1 2 3

i really kinda new with this thanks a lot guys

guys can you help me out with this one..

Freaky Chris · Mar 28th, 2008, 6:15 AM

Couple of things, firtsly could you use code tags to place code in a post.

Secondly welcome to the forums.

OK one of your first problems was your initial for statement had seom variables named wrongly

 PHP Syntax (Toggle Plain Text) 
for($cvchk = 1; $cchk <= $c; $cchk ++)
for($cvchk = 1; $cchk <= $c; $cchk ++)

then there were a few other problems to such as at no point were you specifying to start from any number other than 1, so it would always count from 1-4.

you were also echoing the value of cchk for no reason.

here is the code i come up with not the best for many reasons, such as im not a great programmer/scripter plus i don't know the PHP language but here it is anyway

 PHP Syntax (Toggle Plain Text) 
<? 
$c = $_POST['col'];
$r = $_POST['rw'];
?>
 
<? 
for($cvchk = 1; $cvchk <= $c; $cvchk ++)
{
   $x = $cvchk;
   for($rchk = 1; $rchk <= $r; $rchk ++)
   {  
      if ($x > 4)
      {
         $x = 1;  
      }
      echo $x." ";
      $x += 1;
   }
   echo "<br />";
} 
?>
<? 
$c = $_POST['col'];
$r = $_POST['rw'];
?>

<? 
for($cvchk = 1; $cvchk <= $c; $cvchk ++)
{
   $x = $cvchk;
   for($rchk = 1; $rchk <= $r; $rchk ++)
   {  
      if ($x > 4)
      {
         $x = 1;  
      }
      echo $x." ";
      $x += 1;
   }
   echo "<br />";
} 
?>

As you can see i also check to see if x goes above 4 if so it returns it to 1, this ensure that it doesn't produce this outcome

1234
2345
3456
4567

Also this is unchecked but to make this work for any number of rows, so the highest number = the number of ros simple change this

 PHP Syntax (Toggle Plain Text) 
if ($x > 4)
{
     $x = 1;  
}
.....
if ($x > $r)
{
      $x = 1;  
}
if ($x > 4)
{
     $x = 1;  
}
.....
if ($x > $r)
{
      $x = 1;  
}

Hope this helped if you need anything else just ask.

grimpirate · Mar 28th, 2008, 12:07 PM

This is a bit more memory intensive and slower as well, but I like how it works:

 php Syntax (Toggle Plain Text) 
<?php
// Get matrix size
$rowSize = $_POST['rw'];
$colSize = $_POST['col'];
?>
<?php
// Construct matrix
$shiftable = array();
for($i = 0; $i < $rowSize; $i++){
	$temp = array();
	for($j = 0; $j < $colSize; $j++){
		array_push($temp, $j);
	}
	array_push($shiftable, $temp);
	shiftRow($shiftable, $i, $i);	// Shift matrix accordingly
}
?>
<pre>
<?php
// Print matrix
foreach($shiftable as $row){
	foreach($row as $j => $value){
		echo str_pad($value, 2, ' ', STR_PAD_LEFT);
	}
	echo "\n";
}
?>
</pre>
<?php
// Row shifting function
function shiftRow(&$dArray, $shiftRow, $shiftAmount){
	for($i = 0; $i < $shiftAmount; $i++){
		array_push($dArray[$shiftRow], array_shift($dArray[$shiftRow]));
	}
}
?>
<?php
// Get matrix size
$rowSize = $_POST['rw'];
$colSize = $_POST['col'];
?>
<?php
// Construct matrix
$shiftable = array();
for($i = 0; $i < $rowSize; $i++){
	$temp = array();
	for($j = 0; $j < $colSize; $j++){
		array_push($temp, $j);
	}
	array_push($shiftable, $temp);
	shiftRow($shiftable, $i, $i);	// Shift matrix accordingly
}
?>
<pre>
<?php
// Print matrix
foreach($shiftable as $row){
	foreach($row as $j => $value){
		echo str_pad($value, 2, ' ', STR_PAD_LEFT);
	}
	echo "\n";
}
?>
</pre>
<?php
// Row shifting function
function shiftRow(&$dArray, $shiftRow, $shiftAmount){
	for($i = 0; $i < $shiftAmount; $i++){
		array_push($dArray[$shiftRow], array_shift($dArray[$shiftRow]));
	}
}
?>

Mar 28th, 2008, 3:53 AM	#1
dark06 Newbie Join Date: Mar 2008 Posts: 1 Rep Power: 0	help for (for) `<? $c = $_POST['col']; $r = $_POST['rw']; ?> <? for($cvchk = 1; $cchk<= $c; $cchk ++) { echo $cchk."<br>"; for($rchk = 1; $rchk<= $r; $rchk ++) { echo $rchk." "; } } ?>` i don't know what is wrong with this one i want the output to become this one 1 2 3 4 2 3 4 1 3 4 1 2 4 1 2 3 i really kinda new with this thanks a lot guys guys can you help me out with this one..

Mar 28th, 2008, 6:15 AM	#2
Freaky Chris Hobbyist Programmer Join Date: Dec 2007 Location: England Posts: 130 Rep Power: 1	Re: help for (for) Couple of things, firtsly could you use code tags to place code in a post. Secondly welcome to the forums. OK one of your first problems was your initial for statement had seom variables named wrongly PHP Syntax (Toggle Plain Text) for($cvchk = 1; $cchk <= $c; $cchk ++) for($cvchk = 1; $cchk <= $c; $cchk ++) then there were a few other problems to such as at no point were you specifying to start from any number other than 1, so it would always count from 1-4. you were also echoing the value of cchk for no reason. here is the code i come up with not the best for many reasons, such as im not a great programmer/scripter plus i don't know the PHP language but here it is anyway PHP Syntax (Toggle Plain Text) <? $c = $_POST['col']; $r = $_POST['rw']; ?> <? for($cvchk = 1; $cvchk <= $c; $cvchk ++) { $x = $cvchk; for($rchk = 1; $rchk <= $r; $rchk ++) { if ($x > 4) { $x = 1; } echo $x." "; $x += 1; } echo "<br />"; } ?> <? $c = $_POST['col']; $r = $_POST['rw']; ?> <? for($cvchk = 1; $cvchk <= $c; $cvchk ++) { $x = $cvchk; for($rchk = 1; $rchk <= $r; $rchk ++) { if ($x > 4) { $x = 1; } echo $x." "; $x += 1; } echo "<br />"; } ?> As you can see i also check to see if x goes above 4 if so it returns it to 1, this ensure that it doesn't produce this outcome 1234 2345 3456 4567 Also this is unchecked but to make this work for any number of rows, so the highest number = the number of ros simple change this PHP Syntax (Toggle Plain Text) if ($x > 4) { $x = 1; } ..... if ($x > $r) { $x = 1; } if ($x > 4) { $x = 1; } ..... if ($x > $r) { $x = 1; } Hope this helped if you need anything else just ask. __________________ Who said i couldn't program `sarcasm = raw_input('Type in a sarcastic remark: ') print sarcasm` Last edited by Freaky Chris; Mar 28th, 2008 at 6:30 AM.

Mar 28th, 2008, 12:07 PM	#3
grimpirate King of Portal Join Date: Sep 2005 Posts: 365 Rep Power: 3	Re: help for (for) This is a bit more memory intensive and slower as well, but I like how it works: php Syntax (Toggle Plain Text) <?php // Get matrix size $rowSize = $_POST['rw']; $colSize = $_POST['col']; ?> <?php // Construct matrix $shiftable = array(); for($i = 0; $i < $rowSize; $i++){ $temp = array(); for($j = 0; $j < $colSize; $j++){ array_push($temp, $j); } array_push($shiftable, $temp); shiftRow($shiftable, $i, $i); // Shift matrix accordingly } ?> <pre> <?php // Print matrix foreach($shiftable as $row){ foreach($row as $j => $value){ echo str_pad($value, 2, ' ', STR_PAD_LEFT); } echo "\n"; } ?> </pre> <?php // Row shifting function function shiftRow(&$dArray, $shiftRow, $shiftAmount){ for($i = 0; $i < $shiftAmount; $i++){ array_push($dArray[$shiftRow], array_shift($dArray[$shiftRow])); } } ?> <?php // Get matrix size $rowSize = $_POST['rw']; $colSize = $_POST['col']; ?> <?php // Construct matrix $shiftable = array(); for($i = 0; $i < $rowSize; $i++){ $temp = array(); for($j = 0; $j < $colSize; $j++){ array_push($temp, $j); } array_push($shiftable, $temp); shiftRow($shiftable, $i, $i); // Shift matrix accordingly } ?> <pre> <?php // Print matrix foreach($shiftable as $row){ foreach($row as $j => $value){ echo str_pad($value, 2, ' ', STR_PAD_LEFT); } echo "\n"; } ?> </pre> <?php // Row shifting function function shiftRow(&$dArray, $shiftRow, $shiftAmount){ for($i = 0; $i < $shiftAmount; $i++){ array_push($dArray[$shiftRow], array_shift($dArray[$shiftRow])); } } ?> __________________ You are here to serve the board. So post well... and live. SPAMMING SPEED! GrimBB

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Programming Forums > Web Development and Design > PHP

help for (for)