带数据标题的分组表

Question

大家好，我试图将我的数据表分组以显示按部门列出的用户，例如：

                     IT DEPARTMENT
Name       Phone     Email           Extension
Bob        99393     ksand@sda       8484

但是我的显示如下：

Name       Phone     Email           Extension    Department
Bob        99393     ksand@sda       8484            IT 

我读了一些关于数据表分组的文章，但是却发现任何可以解释它如何工作以及如何实现的内容。

我的代码如下。 如果有人可以指向我提供帮助的链接，将不胜感激，谢谢。

    <?php 
    require_once"connection.php";

    $contacts = array();

    $all_contacts = "select * from contacts where contact_status = '1'";


    $sql_all_contacts = $conn->query($all_contacts);

    $total_contacts = $sql_all_contacts->num_rows;

    while ($row = mysqli_fetch_assoc($sql_all_contacts)) {
            $contacts[] = $row;
    }
?>
<html>
<head>
    <?php include"includes/head.inc"; ?>

</head>
<body>
    <div class="wrapper">

            <!-- header section -->
            <?php include"includes/header.inc"; ?>

            <!-- content section -->
            <div class="content">
                    <div class="floatl"><h1><?php echo $total_contacts ?> Contact(s) Total</h1></div>
                    <a class="floatr" href="insert_contact.php"><input class="cancel_contact_button" type="button" value="New Contact"></a>    $
                    <div class="clear"></div>
                            <hr class="pageTitle">
                            <table border ="1" style="width:100%" id="contactsTable" class="display">
             <thead>
             <tr align="left">
             <th>Name:</th>
             <th>Email:</th>
             <th>Department:</th>
             <th>Extension:</th>
             <th>Cellphone:</th>
             <th>Actions</th>
             </tr> 
             </thead>

 <tr align="left">
           <th>Name:</th>
           <th>Email:</th>
           <th>Department:</th>
           <th>Extension:</th>
           <th>Cellphone:</th>
           <th>Actions</th>
           </tr> 
            </thead>
            <tbody>
           <?php foreach ($contacts as $contact) {?>
            <tr>
          <td><?php echo $contact["name"];?></td>
          <td><?php echo $contact["email"]; ?></td>
          <td><?php echo $contact["department"]; ?></td>
          <td><?php echo $contact["extension"]; ?></td>
          <td><?php echo $contact["cellphone"]; ?></td>
        <td><a href="update_contact.php?id=<?php echo $contact["contact_id"]; ?>"><i class="fa fa-p$
           </tr>
           <?php } ?>
           </tbody>
           </table>
            </div>
    </div>  
</body>
</html>         

Answer 1

由于您已经在执行while循环以将db行添加到数组中，因此可以使用Department作为键。 这将按部门将联系人分组，并且您可以运行嵌套的foreach循环。

while ($row = mysqli_fetch_assoc($sql_all_contacts)) {
    $contacts[$row['Department']][] = $row;
}

foreach循环：

foreach ($contacts as $department => $contactGroup) {
    echo $department;
    foreach($contactGroup as $contact) {
        // output your contact here
    }
}