//选择排序法

$arr = array(3,55,45,2,67,76,6.7,-65,85,4);

function selectSort($arr){

    for ( $i=0; $i<count($arr);$i++ ){

        $index = $i;

        $min_val = $arr[$i];

        for ($j=$i+1;$j<count($arr);$j++){

            if ( $arr[$j]<=$min_val ){

                 $min_val = $arr[$j];

                 $index = $j;

            }

        }

        $arr[$index] = $arr[$i];

        $arr[$i] = $min_val;

    }

    return $arr;

}

$res = selectSort($arr);

echo "<pre>";print_r($res);

exit;