Sort - Compare More Than 2 Values

[fanfavorite]

Is there a way to do a comparison sort for more than 2 values?  I use uasort to compare 2 values, but in some cases need to compare 3+. 

 

Can someone help me get on track?

 

Thanks. 

[premiso]

You just have to code the user function to do it. I have never seen it done. But I am sure it is possible to do, perhaps post your sort function code and maybe a before and end example of the data/sorted you want returned.

[fanfavorite]

I'll make it simple.  If I get the process, I can figure out how to incorporate mine better.  Here is the simple version right now:

 

	function Compare_standings($ar1, $ar2){ 
	if ($ar1['pts']<$ar2['pts']) {
      			return 1;
	} else if ($ar1['pts']>$ar2['pts']) {
      			return -1;
	}
	if (in_array($ar1['id'],$ar2['teamsbeat'])) {
		return 1;
	} elseif (in_array($ar2['id'],$ar1['teamsbeat'])) {
		return -1;
	}
   		return 0;
}

 

What I would like to do is if there are more than 2 with the same amount of "pts" then check all 3: 

 

	function Compare_standings($ar1, $ar2, $ar3){ 
	if ($ar1['pts']<$ar2['pts']) {
      			return 1;
	} else if ($ar1['pts']>$ar2['pts']) {
      			return -1;
	}
	if ($ar3['pts'] == $ar1['pts']) {
		if (in_array($ar1['id'],$ar2['teamsbeat']) AND in_array($ar3['id'],$ar2['teamsbeat'])) {
			return 1;
		} elseif (in_array($ar2['id'],$ar1['teamsbeat']) AND in_array($ar3['id'],$ar1['teamsbeat'])) {
			return -1;
		}
	} else {
		if (in_array($ar1['id'],$ar2['teamsbeat'])) {
			return 1;
		} elseif (in_array($ar2['id'],$ar1['teamsbeat'])) {
			return -1;
		}
	}
   		return 0;
}

 

Not sure exactly how I should be structuring because not sure how the compare works with more than 2 values, but this should show what I am trying to do.

 

Thanks!

[fanfavorite]

Can anyone shed some light or perhaps point me in the right direction?  Really stuck here.  Thanks.