rascle

Solved, thank you

But it isn't listing them how I want it, I'll have to do some more research unless you have any insights?

Using the php.net I have come up with the following, but it is probably rubbish!: function sortdtr($a,$B){ $a = explode('x^',$a); $b = explode('x^',$B); if($a==$B){ return 0; } else if($a>$B){ return -1;} else if($a<$B){ return 1; } } usort($dtr, "sortdtr"); echo "<br/>"; print_r($dtr);

But what would the function be?

I havent got a solution but I can change the values so that x is x^1 and a constant is x^0. This might make it easier, all I need to know is how to order based on the value after "x^"

Hi I have an array (which is an equation) lets say it is Array ( [0] => 18x [1] => 10x^2 [2] => 17 ) I want to order the array in terms of the value after ^, so that the highest values after ^ are grouped first. Therefore the above array I want it sorted to become Array ( [0] => 10x^2 [1] => 18x [2] => 17 ) Does anyone have any idea how I would sort it? I have tried using php sort() to no avail. Thanks, Rhys