如何检索数组中按钮的名称？

Question

我的网站查询localhost数据库并检索“菜单”的数据并将其显示在表格中。我为按钮设置了一列。这些按钮被分配了名称，这些名称按照数组的顺序排列 'ids'是唯一的，来自数据库。

  $username="root";
  $password="";
  $database="login";

  $con = mysql_connect("localhost", $username, $password);
  $selectdb = mysql_select_db("login",$con);

  // get results from database
  $result = mysql_query("SELECT id, name, price, category FROM menu")
  or die(mysql_error());

  echo "<form action='' method='POST'>";
  echo "<p>Select: <a href=admin_menu.php>Add</a> | <b>Edit</b> | <a href=admin_menu_delete.php>Delete</a> |</p>";
  echo "<table border='0' cellpadding='10'>";
  echo "<tr> <th>ID</th> <th>Name</th> <th>Price ($)</th> <th>Category</th> <th>Edit</th> </tr>";

  // loop through results of database query, displaying them in the table
  while($row = mysql_fetch_array( $result )) {
    if ($row['category'] == '1') {
      $category = "Breakfast";
    }
    if ($row['category'] == '2') {
      $category = "Drinks";
    }
    if ($row['category'] == '3') {
      $category = "Snacks";
    }
    if ($row['category'] == '4') {
      $category = "Main";
    }
    echo "<tr>";     // echo out the contents of each row into a table
    echo '<td>' . $row['id'] . '</td>';
    echo '<td>' . $row['name'] . '</td>';
    echo '<td>' . $row['price'] . '</td>';
    echo '<td>' . $category . '</td>';
    echo '<td><button type="submit" value="Edit" name="id['.$row['id'].']" /></button>' . '</td>';
    echo "</tr>";
  }

    // close table>
    echo "</table>";
    echo '</form>';
    print_r($_POST);

当我点击第30行的按钮时，这就是我所看到的。

那么，当我点击第30行的按钮时，你如何在另一个php页面中提取数字30？

Answer 1

你可能会改变你的代码，

$username="root";
  $password="";
  $database="login";

  $con = mysqli_connect("localhost", $username, $password);
  $selectdb = mysqli_select_db("login",$con);

  // get results from database
  $result = mysqli_query("SELECT id, name, price, category FROM menu")
  or die(mysql_error());

  echo "<form action='' method='POST'>";
  echo "<p>Select: <a href=admin_menu.php>Add</a> | <b>Edit</b> | <a href=admin_menu_delete.php>Delete</a> |</p>";
  echo "<table border='0' cellpadding='10'>";
  echo "<tr> <th>ID</th> <th>Name</th> <th>Price ($)</th> <th>Category</th> <th>Edit</th> </tr>";

  // loop through results of database query, displaying them in the table
  while($row = mysqli_fetch_array( $result )) {
    if ($row['category'] == '1') {
      $category = "Breakfast";
    }
    if ($row['category'] == '2') {
      $category = "Drinks";
    }
    if ($row['category'] == '3') {
      $category = "Snacks";
    }
    if ($row['category'] == '4') {
      $category = "Main";
    }
    echo "<tr>";     // echo out the contents of each row into a table
    echo '<td>' . $row['id'] . '</td>';
    echo '<td>' . $row['name'] . '</td>';
    echo '<td>' . $row['price'] . '</td>';
    echo '<td>' . $category . '</td>';
    echo '<td><button type="submit" value="'.$row['id'].'" name="Edit" />Edit</button>' . '</td>';
    echo "</tr>";
  }

    // close table>
    echo "</table>";
    echo '</form>';
    print_r($_POST);

然后， 使用$_POST['Edit']访问按钮值。