Problem iterating through array numbers above and below a certain value

PHP
1

Hi,

I have an array with 4 values I am running throgh in a foreach loop. Each iteration of this has another array with the same values which also runs in a loop.

The code I am having trouble writing is this:

  • run through array
  • run through second array in nested loop
  • check if nested array value is == to parent array value
  • if nested array value is < parent, what is the difference. Get diff and multiply by -520
  • if nested array value is == parent, keep same value
  • if nested array value is > parent, what is the differnce in values. get diff and multiply by 520

here is some code I have…can’t solve it at the moment though. hopefully someone can help:

<?php
$panels = 4;
for($arrnum = 1;$arrnum <= $panels;$arrnum++){
	$panelarray[$arrnum] = $arrnum;
}
//print_r($panelarray);
foreach($panelarray as $tabcount){
	if($tabcount != 1){//if not 1st tab, run it

		$tabs = $panels;
		$prev = $tabs - ($tabcount+1);
		$next = $tabs - ($prev + 1);
		
		for($innertab = 1;$innertab <= $panels;$innertab++){
			
			if($innertab < $tabcount){
				$denom = $prev;
				$buttonslide = $denom * (-520);
			}
			if($innertab > $tabcount){
				$buttonslide = $next * 520;
				$next = $next + 1;
			}
			
			if($innertab == $tabcount){
				echo $tabcount;
			}
	
		}//end for
	}//end if not tab 1
}//end foreach
?>

Thanks

2

what are the names of your 2 arrays?

I see only 1 array.

3

Sorry, my bad. Got mixed up posting this.

It is 1 array then a for loop that matches the number of values in the array…the variable $panels.

it could be done with 2 foreach loops as well. I’ve just been trying different ways to get it working and think I’ve been stairing at it too long!

4

Why would you want to match all values with all values? Shouldn’t it be
one value of the 2nd array with one from the first? Your code right will do 4
actions for 1 number 4 times.

5

Yeah, I need it to go through each number and then run another loop inside this for each number.

If the number of values is 5, run 5 times and within each iteration, run a sub-loop 5 times that checks the current value of the sub-loop against the value of the parent loop. If the sub-loop value is less than the parent loops, multiply the sub-loops position * -520. If the sub-loop value is greater than the parent loop, multiply it by the position away from the parent loop value * 520. ie:

  • code runs 1st and parent loop is at [1] on first iteration

  • subloop runs

  • second loop is at [1][1] so value [1] (parent) == [1] (subloop)

  • second loop is at 12 so value is 1 place above the parent loop…so 1 * 520

  • second loop is at [1][3] so value is now 2 places above the parent loop…so 2 * 520

  • second loop is at [1][4] so value is now 3 places above the parent loop, so 3 * 520

  • sub loop has run 4 times so finished and flow moves back to parent loop, which now iterates again which leads to;

  • code runs 2nd time and parent loop is at [2] on second iteration

  • subloop runs

  • second loop is at [2][1] so value [2] (parent) < [1] (subloop). The distance of the subloop position away from the parent loop position is 1. As it is subloop position < parent we mutliply * -520

Hope I have explained this well enough! It may seem like a strange setup but this is the logic I need for my application which will be a flat HTML code generator for something I am making that cant use PHP or anything like that.

6

Anyone able to help?