检查每个可能的数字组合与一个[关闭]

Question

I currently load numbers into an array, these are always different numbers and there can be any amount of them, here is an example;

Array ( [0] => 60.0 [1] => 56.8 [2] => 42.08 [3] => 52.16 [4] => 52.8 )

I am trying to calculate every possible out come of this array, I simply need to add all numbers together (apart from the key number and its self) and try to match a figure, for example;

60.0 + 56.8, 60.0 + 42.08, 60.0 + 52.16 etc etc

Then to 56.8 + 60.0, 56.8 + 42.08 etc etc

but not including; 60.0 + 60.0 or another calculations that include themselfs

Answer 1

try this one..

   $str = Array ( "60.0","56.8","42.08","52.16","52.8" );
$result = array();
foreach ($str as $v){
    foreach($str as $d){
        if($d!=$v){

            $result[]=$v."+".$d;
        }
    }
}

$strResult = implode(",",$result);
print_r($strResult);