Php 从数据库中检索要在新选项卡中使用的当前用户id_Php_Mysql_Session_Insert

Php 从数据库中检索要在新选项卡中使用的当前用户id

php mysql session

Php 从数据库中检索要在新选项卡中使用的当前用户id,php,mysql,session,insert,Php,Mysql,Session,Insert,我有一个配置文件页面，可以在其中检索用户信息 Profile.php <?php require 'core/init.php'; if(!$username = Input::get('user')) { Redirect::to('index.php'); } else { $user = new User($username); if(!$user->exists()) { Redirect::to(404); } els

我有一个配置文件页面，可以在其中检索用户信息

Profile.php

  <?php
require 'core/init.php';

if(!$username = Input::get('user')) {
    Redirect::to('index.php');
} else {
    $user = new User($username);

    if(!$user->exists()) {
        Redirect::to(404);
    } else {
        $data = $user->data();
    }
    ?>

    <h3><?php echo escape($data->username); ?></h3>
    <p>Membership No: <?php echo escape($data->id); ?></p>
    <p>Full name: <?php echo escape($data->name); ?></p>
    <p>Date of birth: <?php echo escape($data->dob); ?></p>
    <p>Location: <?php echo escape($data->location); ?></p>
    <p>Join date: <?php echo escape($data->joined); ?></p>



    <?php

    <?php
session_start();
require 'core/init.php';

$Band_id = mysql_real_escape_string($_POST['band']);
$user_id = $_SESSION['id'];

 $sql = "INSERT INTO orders (band_id,user_id) VALUES('$Band_id', '$user_id')";
mysql_query ($sql, $linkme)
    or die ("could not add to database");
?>

<?php
session_start();
require 'core/init.php';

if(!$username = Input::get('user')) {
    Redirect::to('index.php');
    exit;
}

if(!isset($_SESSION['user_data'])){
    $user = new User($username);

    if(!$user->exists()) {
        Redirect::to(404);
        exit;
    }

    $_SESSION['user_data'] = $user->data();
}
?>

<h3><?php echo escape($_SESSION['user_data']->username); ?></h3>
<p>Membership No: <?php echo escape($_SESSION['user_data']->id); ?></p>
<p>Full name: <?php echo escape($_SESSION['user_data']->name); ?></p>
<p>Date of birth: <?php echo escape($_SESSION['user_data']->dob); ?></p>
<p>Location: <?php echo escape($_SESSION['user_data']->location); ?></p>
<p>Join date: <?php echo escape($_SESSION['user_data']->joined); ?></p>

<?php
session_start();
require 'core/init.php';

if(!isset($_SESSION['user_data'])){
    Redirect::to('index.php');
    exit;
}

$Band_id = mysql_real_escape_string($_POST['band']);
$user_id = $_SESSION['user_data']->id;

$sql = "INSERT INTO orders (band_id,user_id) VALUES('$Band_id', '$user_id')";
mysql_query ($sql, $linkme)
or die ("could not add to database");
?>

及

但是它不起作用，是否有人知道如何检索用户id，以便我可以将其插入数据库？

您可以做的是将用户数据保存到会话中

$_SESSION['user_data'] = $user->data();

一旦设置了

$\u会话['user\u data']

，则可以将其分配回

$data

，否则重新查询模型

和

session\u start（）

也应该位于要为其保留会话的每个文件的顶部

比如：

Profile.php

  <?php
require 'core/init.php';

if(!$username = Input::get('user')) {
    Redirect::to('index.php');
} else {
    $user = new User($username);

    if(!$user->exists()) {
        Redirect::to(404);
    } else {
        $data = $user->data();
    }
    ?>

    <h3><?php echo escape($data->username); ?></h3>
    <p>Membership No: <?php echo escape($data->id); ?></p>
    <p>Full name: <?php echo escape($data->name); ?></p>
    <p>Date of birth: <?php echo escape($data->dob); ?></p>
    <p>Location: <?php echo escape($data->location); ?></p>
    <p>Join date: <?php echo escape($data->joined); ?></p>



    <?php

    <?php
session_start();
require 'core/init.php';

$Band_id = mysql_real_escape_string($_POST['band']);
$user_id = $_SESSION['id'];

 $sql = "INSERT INTO orders (band_id,user_id) VALUES('$Band_id', '$user_id')";
mysql_query ($sql, $linkme)
    or die ("could not add to database");
?>

<?php
session_start();
require 'core/init.php';

if(!$username = Input::get('user')) {
    Redirect::to('index.php');
    exit;
}

if(!isset($_SESSION['user_data'])){
    $user = new User($username);

    if(!$user->exists()) {
        Redirect::to(404);
        exit;
    }

    $_SESSION['user_data'] = $user->data();
}
?>

<h3><?php echo escape($_SESSION['user_data']->username); ?></h3>
<p>Membership No: <?php echo escape($_SESSION['user_data']->id); ?></p>
<p>Full name: <?php echo escape($_SESSION['user_data']->name); ?></p>
<p>Date of birth: <?php echo escape($_SESSION['user_data']->dob); ?></p>
<p>Location: <?php echo escape($_SESSION['user_data']->location); ?></p>
<p>Join date: <?php echo escape($_SESSION['user_data']->joined); ?></p>

<?php
session_start();
require 'core/init.php';

if(!isset($_SESSION['user_data'])){
    Redirect::to('index.php');
    exit;
}

$Band_id = mysql_real_escape_string($_POST['band']);
$user_id = $_SESSION['user_data']->id;

$sql = "INSERT INTO orders (band_id,user_id) VALUES('$Band_id', '$user_id')";
mysql_query ($sql, $linkme)
or die ("could not add to database");
?>


成员编号：
全名：
出生日期：
地点：
加入日期：

oOrder.php

  <?php
require 'core/init.php';

if(!$username = Input::get('user')) {
    Redirect::to('index.php');
} else {
    $user = new User($username);

    if(!$user->exists()) {
        Redirect::to(404);
    } else {
        $data = $user->data();
    }
    ?>

    <h3><?php echo escape($data->username); ?></h3>
    <p>Membership No: <?php echo escape($data->id); ?></p>
    <p>Full name: <?php echo escape($data->name); ?></p>
    <p>Date of birth: <?php echo escape($data->dob); ?></p>
    <p>Location: <?php echo escape($data->location); ?></p>
    <p>Join date: <?php echo escape($data->joined); ?></p>



    <?php

    <?php
session_start();
require 'core/init.php';

$Band_id = mysql_real_escape_string($_POST['band']);
$user_id = $_SESSION['id'];

 $sql = "INSERT INTO orders (band_id,user_id) VALUES('$Band_id', '$user_id')";
mysql_query ($sql, $linkme)
    or die ("could not add to database");
?>

<?php
session_start();
require 'core/init.php';

if(!$username = Input::get('user')) {
    Redirect::to('index.php');
    exit;
}

if(!isset($_SESSION['user_data'])){
    $user = new User($username);

    if(!$user->exists()) {
        Redirect::to(404);
        exit;
    }

    $_SESSION['user_data'] = $user->data();
}
?>

<h3><?php echo escape($_SESSION['user_data']->username); ?></h3>
<p>Membership No: <?php echo escape($_SESSION['user_data']->id); ?></p>
<p>Full name: <?php echo escape($_SESSION['user_data']->name); ?></p>
<p>Date of birth: <?php echo escape($_SESSION['user_data']->dob); ?></p>
<p>Location: <?php echo escape($_SESSION['user_data']->location); ?></p>
<p>Join date: <?php echo escape($_SESSION['user_data']->joined); ?></p>

<?php
session_start();
require 'core/init.php';

if(!isset($_SESSION['user_data'])){
    Redirect::to('index.php');
    exit;
}

$Band_id = mysql_real_escape_string($_POST['band']);
$user_id = $_SESSION['user_data']->id;

$sql = "INSERT INTO orders (band_id,user_id) VALUES('$Band_id', '$user_id')";
mysql_query ($sql, $linkme)
or die ("could not add to database");
?>

您在页面上看到了什么？您是否转储了$\u SESSION['id'的值？请确保页面上的正确性，它工作正常，但当我检查我的数据库时，输入的是波段id，而不是用户id。用户id列的类型是什么？我仍然怀疑$user_id的价值。请先检查它。该列是id，它是一个varcharsession_start（）才能使用$\u会话
。它使用in order.php。我认为session\u autostart是错误的谢谢，我会试试。@Loz Cherone啊，我明白了，谢谢，我会对pdoah做一些研究。我发现了一个问题，出于某种原因，订单只显示了一个用户，在新用户登录时不会添加不同的id。