arrays

[axman505]

Hello,

I have the following contents in an array:
0,1,3,7

Say i get a value, and if that value is 3, i want to cycle through the array with 3, 7, 0, 1

If the value is 1, then cycle through the array 1, 3, 7, 0

Is there a function to accomplish this?

 

[KarveR]

check out sort() on php.net

I'm a little baffled as to why, if you posted maybe a little more info, ideas spring up like mushrooms

______________________________________________________________________
There's no present like the time, they say. - Henry's Cat.

 

[axman505]

Well, It is for a program at a universitry were the semester terms are 2040, 2041, 2043 and 2047 for this year. The 2 corresponds to the millenuym, the 04 is the last two digits of the year, and the the 0 is for winter, 1 for spring, 3 for summer and 7 for winter.

What i need is a function that will always produce the next 3 semesters to populate a drop down list.

Does this clarify things?

 

[sleipnir214]

This sounds like an odometer problem:

<?php

function next_value ($current_value)
{
	$values_array = array (0, 1, 3, 7);
	$retval = FALSE;
	
	$pos = array_search($current_value, $values_array);
	
	if ($pos !== FALSE)
	{
		$retval = ($pos + 1) % count($values_array);
	}
	
	return $values_array[$retval];
}

$start = 3;

for ($counter = 0; $counter < 3; $counter++)
{
	$start = next_value($start);
	print $start. '<br>';

}
?>

Want the best answers? Ask the best questions!

TANSTAAFL!!

 

[axman505]

This is what I ended up doing:

while ($semNum[0] != $semNumIn) {
$item = array_shift($semNum);
array_push($semNum,$item);
}