foreach problem

Question

Why does the foreach output name appear double (PS has only two fields)

<?
for($iCnt2 = 0; $iCnt2 < sqlsrv_num_fields($result); $iCnt2++) {
    foreach( sqlsrv_field_metadata( $result) as $v ){
        echo "<td  align=center>". $v['Name']."</td>" ;
    }
}
?>

Answer 1

Using foreach to traverse in a for loop is equivalent to looping the traversal again. You can know the difference between for and foreach in Baidu.

Answer 2