如果设置单选按钮如何获取

Question

So i ve got 3 radio buttons in a html document. Then i simply try to get if one of the buttons is set and then to print a message for one of the ticked buttons. They all are in a form. my buttons are:

echo "<table border=0>";
                echo "
                    <tr>
                        <td>
                            <input type=radio name=sg value=admin /> Administrator
                        </td>
                    </tr>
                ";
                echo "
                    <tr>
                        <td>
                            <input type=radio name=sg value=operator /> Operator
                        </td>
                    </tr>
                ";
                echo "
                    <tr>
                        <td>
                            <input type=radio name=sg value=member checked=checked /> member
                        </td>
                    </tr>
                ";
        echo "</table>";

The way i try to get them is:

if(isset($_GET['member'])) {
            echo "m is set!";
        }
        if(isset($_GET['admin'])) {
            echo "a is set!";
        }
        if(isset($_GET['operator'])) {
            echo "op is set!";
        }

This doesnt print anything, means none of the statements in the if clauses are true. How do i get them?

Answer 1

You access the value of the input incorrectly, like this:

if(isset($_GET['member']))

instead of the name of the HTML element, like this:

  if(isset($_GET['sg'])){ 
      if($_GET['sg'] == "member") {
        echo "m is set!";
     }
     if($_GET['sg'] == "admin") {{
        echo "a is set!";
     }
     if($_GET['sg'] == "operator"){
        echo "op is set!";
     }
  }