Question

我试图找出在foreach之外输出数据的最佳方法，同时仍保持所有结果。

我想要获得的变量是$pending_friend_1和$pending_friend_img。

目前，我正在使用一个变量$pending_friend_1完成此操作，方法是将其设置为数组$friends_pending_arr[] = $pending_friend_1;，然后将其插入foreach循环之外。但是，在将其输出到$pending_friend_list时，我无法弄清楚如何使用两个不同的变量。

有没有比我更好的方法，或者我可以用implode方法做到这一点，如果是这样，我怎么能用这两个变量做到这一点？我想要<div class="pending_friend_user">中的两个变量。

$pending_friend_list = null;
$pending_friend_images = null;
foreach ($pending_friend_rows as $pending_friend_row) {
    $pending_friend_1           = $pending_friend_row['friend_one'];
    $pending_friend_2           = $pending_friend_row['friend_two'];
    $pending_friend_status      = $pending_friend_row['status'];
    $pending_friend_status_date = $pending_friend_row['date'];
    $pending_friend_img         = $pending_friend_row['img'];
    $total_pending_friends      = $pending_friend_1 . "<br>" . $pending_friend_2;

    if ($pending_friend_2 == $user_id) {
        $pending_friend_list_approve = '<img src="../icons/collection/checkmark.png" class="pending_approve_friend" alt="Approve Friend">';
        $pending_friend_list_decline = '<img src="../icons/collection/x-sign.png" class="pending_decline_friend" alt="Approve Friend">';
        $friends_pending_arr[] = $pending_friend_1;
        $friends_pending_img_arr[] = $pending_friend_img;
        $pending_friend_list = '<div class="pending-friend-list-row"><div class="pending_friend_user">'. implode
            ('</div><div class="pending_friend_list_decision"><div class="total-center">' . $pending_friend_list_approve . $pending_friend_list_decline . 
            '</div></div></div><div class="pending-friend-list-row"><div class="pending_friend_user">', $friends_pending_arr) .
            '</div><div class="pending_friend_list_decision"><div class="total-center">' . $pending_friend_list_approve . $pending_friend_list_decline . '</div></div></div>';
    }

示例：

$pending_friend_list = null;
$pending_friend_images_output = "";
$friends_pending_output = "";
forloop {
    $pending_friend_1           = $pending_friend_row['friend_one'];
    $pending_friend_2           = $pending_friend_row['friend_two'];
    $pending_friend_status      = $pending_friend_row['status'];
    $pending_friend_status_date = $pending_friend_row['date'];
    $pending_friend_img         = $pending_friend_row['img'];
$friends_pending_output .= $pending_friend_1;
$pending_friend_images_output .= '<img src="' . $pending_friend_img .'">';
}
$pending_friend_list = 
    '<div class="pending-friend-list-row"><div class="pending_friend_user"><div class="pending_friend_list_img"> ' . echo $pending_friend_images_output . '</div>
    </div><div class="pending_friend_list_decision"><div class="total-center">' . $pending_friend_list_approve . $pending_friend_list_decline . 
    '</div></div></div>;

所需的HTML：

 <div id="pending-friend-list-dropdown">
    <div id="pending-friend-list-container">
        <div id="pending-friend-list-summary">
            <div class="pending-friend-list-row">
                <div class="pending_friend_user">
                    <div class="pending_friend_list_img">
                        <img src=friend1>
                    </div>  
                    <div> user_id //friend 1// </div>
                </div>
                <div class="pending_friend_list_decision">
                    <div class="total-center">
                        <img src="../icons/collection/checkmark.png" class="pending_approve_friend" alt="Approve Friend">
                        <img src="../icons/collection/x-sign.png" class="pending_decline_friend" alt="Decline Friend">
                    </div>
                </div>
            </div>
            <div class="pending-friend-list-row">
                <div class="pending_friend_user">
                    <div class="pending_friend_list_img">
                        <img src=friend1>
                    </div>  
                    <div> user_id //friend 2// </div>
                </div>
                <div class="pending_friend_list_decision">
                    <div class="total-center">
                        <img src="../icons/collection/checkmark.png" class="pending_approve_friend" alt="Approve Friend">
                        <img src="../icons/collection/x-sign.png" class="pending_decline_friend" alt="Decline Friend">
                    </div>
                </div>
            </div>
            <div class="pending-friend-list-row">
                <div class="pending_friend_user">
                    <div class="pending_friend_list_img">
                        <img src=friend1>
                    </div>  
                    <div> user_id //friend 3// </div>
                </div>
                <div class="pending_friend_list_decision">
                    <div class="total-center">
                        <img src="../icons/collection/checkmark.png" class="pending_approve_friend" alt="Approve Friend">
                        <img src="../icons/collection/x-sign.png" class="pending_decline_friend" alt="Decline Friend">
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

我更新的完整代码：

$pending_list_output = 
    '<div id="pending-friend-list-dropdown">
        <div id="pending-friend-list-container">
            <div id="pending-friend-list-summary">
                <div class="pending_friend_list_content"><?php echo $total_pending_count; ?></div>';

//Display pending friends
//$pending_friend_list = null;
    $status_pending = '1';
    $friends_pending_sql = "
        SELECT f.*, p.*,coalesce(p.img, 'profile_images/default.jpg') as img
        FROM friends f LEFT JOIN
             profile_img p 
             ON p.user_id = f.friend_one 
        WHERE f.friend_two = ? AND f.status = ? AND
              p.id = (select max(p2.id) from profile_img p2 where p2.user_id = p.user_id)
    ";
    $pending_friend_count_stmt = $con->prepare($friends_pending_sql);
    $pending_friend_count_stmt->execute(array($user_id, $status_pending));
    $pending_friend_rows = $pending_friend_count_stmt->fetchAll(PDO::FETCH_ASSOC);

    $pending_friend_list_approve = '<img src="../icons/collection/checkmark.png" class="pending_approve_friend" alt="Approve Friend">';
    $pending_friend_list_decline = '<img src="../icons/collection/x-sign.png" class="pending_decline_friend" alt="Decline Friend">';
    foreach ($pending_friend_rows as $pending_friend_row) {
        $pending_friend_1               = $pending_friend_row['friend_one'];
        $pending_friend_2               = $pending_friend_row['friend_two'];
        $pending_friend_status          = $pending_friend_row['status'];
        $pending_friend_status_date     = $pending_friend_row['date'];
        $pending_friend_img             = $pending_friend_row['img'];
        $total_pending_friends          = $pending_friend_1 . "<br>" . $pending_friend_2;
        //$friends_pending_output       .= $pending_friend_1;
        $pending_friend_images_output   = '<img src="' . $pending_friend_img .'">';

        if ($pending_friend_2 == $user_id) {
            $pending_friend_list_approve;
            $pending_friend_list_decline;
            $pending_list_output .= 
                '<div class="pending-friend-list-row">
                    <div class="pending_friend_user">
                        <div class="pending_friend_list_img"> ' . $pending_friend_images_output . '</div>
                        <div class="pending_friend_list_username">' . $pending_friend_1 . '</div>
                    </div>
                    <div class="pending_friend_list_decision">
                        <div class="total-center">' . $pending_friend_list_approve . $pending_friend_list_decline . '</div>
                    </div>
                </div>';
        }
        else {
            $pending_list_output = "No pending friends at this time.";
        }
    }
    if ($total_pending_count == 0) {
        $total_pending_count = "No new requests.";
    }
    else {
        $total_pending_count = "Pending Friends - " . $total_pending_count;
    }
    $pending_list_output .= 
            '</div>
        </div>  
    </div>';
    echo $pending_list_output;
 ?>

Answer 1

将HTML结构直接放入字符串中，并将变量连接到需要插入的位置。

$output = '<div id="pending-friend-list-dropdown">
                <div id="pending-friend-list-container">
                    <div id="pending-friend-list-summary">';
foreach ($pending_friend_rows as $pending_friend_row) {
    $pending_friend_1           = $pending_friend_row['friend_one'];
    $pending_friend_img         = $pending_friend_row['img'];
    $output .= '<div class="pending-friend-list-row">
                    <div class="pending_friend_user">
                        <div class="pending_friend_list_img">
                            <img src="' . $pending_friend_img . '">
                        </div>  
                        <div>' . $pending_friend_1 . '</div>
                    </div>
                    <div class="pending_friend_list_decision">
                        <div class="total-center">
                            <img src="../icons/collection/checkmark.png" class="pending_approve_friend" alt="Approve Friend">
                            <img src="../icons/collection/x-sign.png" class="pending_decline_friend" alt="Decline Friend">
                        </div>
                    </div>
                </div>';
}
$output .= '</div>
        </div>
    </div>';

echo $output;

显示foreach语句中的数据

1 个答案: