我有这个代码。
$correct_spot = rand(1,10);
$data = array(
'current_correct_answer' => $correct_spot
);
$this->db->update('demo_user_profiles', $data, array('upro_id' => $user_id));
$query = $this->db->get_where('demo_user_profiles', array('upro_id' => $user_id));
$result = $query->result();
print_r($result);
在这个页面上，$correct_spot 编号被打印出来，插入，然后检索和重新打印。一切正常。但是，如果我在 PHPmyadmin 中查看 $correct_spot 有时会有错误的值，就好像它再次评估整个事情一样。这是一个问题，因为当我在另一个页面上检索值时，它与我输入的值不同。我做错了什么吗？MySQL 字段只是一个 int(11)。
提前致谢。
相关控制器代码用于“问题”
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Site extends CI_Controller {
/**
* Index Page for this controller.
*
* Maps to the following URL
* http://example.com/index.php/welcome
* - or -
* http://example.com/index.php/welcome/index
* - or -
* Since this controller is set as the default controller in
* config/routes.php, it's displayed at http://example.com/
*
* So any other public methods not prefixed with an underscore will
* map to /index.php/welcome/<method_name>
* @see http://codeigniter.com/user_guide/general/urls.html
*/
function __construct()
{
parent::__construct();
// To load the CI benchmark and memory usage profiler - set 1==1.
if (1==2)
{
$sections = array(
'benchmarks' => TRUE, 'memory_usage' => TRUE,
'config' => FALSE, 'controller_info' => FALSE, 'get' => FALSE, 'post' => FALSE, 'queries' => FALSE,
'uri_string' => FALSE, 'http_headers' => FALSE, 'session_data' => FALSE
);
$this->output->set_profiler_sections($sections);
$this->output->enable_profiler(TRUE);
}
// Load required CI libraries and helpers.
$this->load->database();
$this->load->library('session');
$this->load->helper('url');
$this->load->helper('form');
// IMPORTANT! This global must be defined BEFORE the flexi auth library is loaded!
// It is used as a global that is accessible via both models and both libraries, without it, flexi auth will not work.
$this->auth = new stdClass;
// Load 'standard' flexi auth library by default.
$this->load->library('flexi_auth');
// Check user is logged in via either password or 'Remember me'.
// Note: Allow access to logged out users that are attempting to validate a change of their email address via the 'update_email' page/method.
if (! $this->flexi_auth->is_logged_in() && $this->uri->segment(2) != 'update_email')
{
// Set a custom error message.
$this->flexi_auth->set_error_message('You must login to access this area.', TRUE);
$this->session->set_flashdata('message', $this->flexi_auth->get_messages());
redirect('auth');
}
// Note: This is only included to create base urls for purposes of this demo only and are not necessarily considered as 'Best practice'.
$this->load->vars('base_url', 'http://cloudtute.com/');
$this->load->vars('includes_dir', 'http://cloudtute.com/includes/');
$this->load->vars('current_url', $this->uri->uri_to_assoc(1));
// Define a global variable to store data that is then used by the end view page.
$this->data = null;
}
public function index()
{
$this->load->view('home');
}
function dashboard()
{
// Get any status message that may have been set.
$this->data['message'] = $this->session->flashdata('message');
$this->load->view('dashboard', $this->data);
}
function question()
{
// Get any status message that may have been set.
$this->data['message'] = $this->session->flashdata('message');
$this->load->view('question', $this->data);
}
function answer()
{
// Get any status message that may have been set.
$this->data['message'] = $this->session->flashdata('message');
//Get question answer
$username = $this->input->post("variable_serial");
$this->data['questiontest']=$username;
$question_id = $this->input->post("question_id");
$this->data['question_id'] = $question_id;
$this->load->view('answer', $this->data);
}
function elements()
{
// Get any status message that may have been set.
$this->data['message'] = $this->session->flashdata('message');
$this->load->view('elements', $this->data);
}
}
/* End of file welcome.php */
/* Location: ./application/controllers/welcome.php */
标头代码：
<?php
/**
* Created by JetBrains PhpStorm.
* User: Randy
* Date: 29/04/13
* Time: 13:37
* To change this template use File | Settings | File Templates.
*/
?>
<!DOCTYPE html>
<!--[if lt IE 7]><html class="no-js lt-ie9 lt-ie8 lt-ie7" lang="en"> <![endif]-->
<!--[if (IE 7)&!(IEMobile)]><html class="no-js lt-ie9 lt-ie8" lang="en"><![endif]-->
<!--[if (IE 8)&!(IEMobile)]><html class="no-js lt-ie9" lang="en"><![endif]-->
<!--[if (IE 9)]><html class="no-js ie9" lang="en"><![endif]-->
<!--[if gt IE 8]><!--> <html lang="en-US"> <!--<![endif]-->
<head>
<!-- Meta Tags -->
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Ace HSC Maths</title>
<meta name="description" content="" />
<!-- Mobile Specifics -->
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="HandheldFriendly" content="true"/>
<meta name="MobileOptimized" content="320"/>
<!-- Mobile Internet Explorer ClearType Technology -->
<!--[if IEMobile]> <meta http-equiv="cleartype" content="on"> <![endif]-->
<!-- Standard Bootstrap -->
<!-- Standard Bootstrap -->
<!-- Bootstrap -->
<link href="<?php echo asset_url();?>css/bootstrap.min.css" rel="stylesheet">
<!-- Revolution Slider -->
<link href="<?php echo asset_url();?>rs-plugin/css/settings.css" rel="stylesheet">
<!-- Main Style -->
<link href="<?php echo asset_url();?>css/main.css" rel="stylesheet">
<!-- FancyBox -->
<link href="<?php echo asset_url();?>css/fancybox/jquery.fancybox.css" rel="stylesheet">
<!-- Font Icons -->
<link href="<?php echo asset_url();?>css/fonts.css" rel="stylesheet">
<!-- Shortcodes -->
<link href="<?php echo asset_url();?>/css/shortcodes.css" rel="stylesheet">
<!-- Responsive -->
<link href="<?php echo asset_url();?>/css/responsive.css" rel="stylesheet">
<!-- Custom CSS -->
<link href="<?php echo asset_url();?>/css/custom.css" rel="stylesheet">
<!-- Google Font -->
<link href='http://fonts.googleapis.com/css?family=Open+Sans:400,300,300italic,400italic,600,600italic,700,700italic,800,800italic' rel='stylesheet' type='text/css'>
<!-- Fav Icon -->
<link rel="shortcut icon" href="#">
<link rel="apple-touch-icon" href="#">
<link rel="apple-touch-icon" sizes="114x114" href="#">
<link rel="apple-touch-icon" sizes="72x72" href="#">
<link rel="apple-touch-icon" sizes="144x144" href="#">
<!-- Modernizr -->
<script src="<?php echo asset_url();?>/js/modernizr.js"></script>
<!-- Analytics -->
<script type="text/javascript">
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'Replace Your Analytics Code']);
_gaq.push(['_trackPageview']);
(function() {
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
})();
</script>
<!-- End Analytics -->
<!-- Highcharts
================================================== -->
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script src="http://code.highcharts.com/highcharts.js"></script>
<!--new Mathjax stuff-->
<style>
.MathJax_Display .MathJax,
DIV.MathJax_MathML math,
.MathJax_SVG_Display .MathJax_SVG {
display: inline-block ! important;
background-color: #ffffff;
padding: 10px ! important;
border: 0px dashed white ! important;
}
</style>
<script type="text/x-mathjax-config">
MathJax.Hub.Config(
{
tex2jax:
{inlineMath: [['%%%%','%%%%'], ['??','??']],
displayMath: [ ['$$','$$'], ['@@', '@@']]
}
}
);
</script>
<script type="text/javascript"
src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML">
</script>
<!--new Mathjax stuff-->
<script type="text/javascript">
$(document).ready(function() {
Highcharts.setOptions({
chart: {
// backgroundColor: {
// linearGradient: [0, 0, 500, 500],
// stops: [
// [0, 'rgb(213, 211, 206)'],
// [1, 'rgb(213, 211, 206)']
// ]
// },
borderWidth: 0,
//plotBackgroundColor: 'rgb(124, 143, 125)',
plotShadow: false,
plotBorderWidth: 0
},
credits: {
enabled: false
},
colors: [
'#323A45',
'#E41B17',
'#FF8330',
'#8bbc21',
'#910000',
'#1aadce',
'#492970',
'#f28f43',
'#77a1e5',
'#c42525',
'#a6c96a'
]
});
var chart1 = new Highcharts.Chart({
chart: {
renderTo: 'dashboardchart',
type: 'spline'
},
title: {
text: ''
},
plotOptions: {
series: {
lineWidth: 5,
marker: {
fillColor: '#FFFFFF',
lineWidth: 2,
radius: 6,
lineColor: null // inherit from series
}
}
},
subtitle: {
text: ''
},
xAxis: {
type: 'datetime',
dateTimeLabelFormats: { // don't display the dummy year
month: '%e %b',
year: '%b'
}
},
yAxis: {
title: {
text: 'Ability Score (out of 100)',
style: {
color: '#323A45',
fontWeight: 'bold'
}
},
min: 0
},
tooltip: {
formatter: function() {
return '<b>'+ this.series.name +'</b><br/>'+
Highcharts.dateFormat('%e %b', this.x) +': '+ this.y;
}
},
series: [{
name: 'Overall Ability',
// Define the data points. All series have a dummy year
// of 1970/71 in order to be compared on the same x axis. Note
// that in JavaScript, months start at 0 for January, 1 for February etc.
data: [
[Date.UTC(2013, 0, 1), 50.0],
[Date.UTC(2013, 0, 10), 51.2],
[Date.UTC(2013, 2, 12), 63.0],
[Date.UTC(2013, 3, 1), 59.0],
[Date.UTC(2013, 3, 10), 58.2],
[Date.UTC(2013, 3, 18), 57.0],
[Date.UTC(2013, 3, 28), 62.0],
[Date.UTC(2013, 4, 11), 67.0],
[Date.UTC(2013, 5, 1), 72.0],
[Date.UTC(2013, 5, 20), 84.0],
[Date.UTC(2013, 6, 13), 82.0],
]
}, {
name: 'Target',
data: [
[Date.UTC(2013, 0, 1), 80.0],
[Date.UTC(2013, 1, 1), 80.0],
[Date.UTC(2013, 2, 1), 80.0],
[Date.UTC(2013, 3, 1), 80.0],
[Date.UTC(2013, 4, 1), 80.0],
[Date.UTC(2013, 5, 1), 80.0],
[Date.UTC(2013, 6, 1), 80.0],
[Date.UTC(2013, 7, 1), 80.0]
],
dashStyle: 'longdash',
marker: {
enabled: false
}
}]
});
});
</script>
</head>
<body>
<!-- Header -->
<header>
<div class="container">
<div class="row">
<div class="span3">
<div id="logo">
<a href="index.html" title="Ace HSC Maths"><font color="#E41B17">A<sup>+</sup></font>ce HSC Maths</a>
</div>
</div>
<div class="span9">
<!-- Mobile Menu -->
<a id="mobile-nav" class="menu-nav" href="#menu-nav"><span class="menu-icon"></span></a>
<!-- Standard Menu -->
<nav id="menu">
<ul id="menu-nav">
<li><a href="http://www.cloudtute.com">Home</a></li>
<li><a href="elements.html">Features</a>
<ul class="sub-menu arrow-up">
<li><a href="full-width.html">Full Width</a></li>
<li><a href="about.html">About Us</a></li>
<li><a href="team.html">Our Team</a></li>
<li><a href="elements.html">Elements</a></li>
<li><a href="typography.html">Typography</a></li>
<li><a href="retina-icons.html">Retina Icons</a></li>
<li><a href="footer-widgets.html">Footer Widgets</a></li>
</ul>
</li>
<li><a href="http://www.cloudtute.com/auth/"><i style ="margin-top: 3px" class="icon-user icon-white"></i> Not Logged In</a>
<ul class="sub-menu arrow-up">
<li><a href="full-width.html">Full Width</a></li>
<li><a href="about.html">About Us</a></li>
<li><a href="team.html">Our Team</a></li>
<li><a href="elements.html">Elements</a></li>
<li><a href="typography.html">Typography</a></li>
<li><a href="retina-icons.html">Retina Icons</a></li>
<li><a href="footer-widgets.html">Footer Widgets</a></li>
</ul>
</li>
</ul>
</nav>
</div>
</div>
</div>
</header>
<!-- End Header -->