//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;