我没有第一次使用foreach循环。但是我第一次看到foreach循环不起作用。我检查了我的代码括号一切顺利。起初我将查询保存在一个模型中，之后我将脚本直接编写到我的视图页面。但是当我使用foreach时，不要使用我的页面显示空白。查询功能也正常工作。
这是查询：
$homeigw = $this->db->query("SELECT * FROM data INNER JOIN trunk_info ON trunk_id = trunc_group WHERE trunk_type = 'igw'");
foreach($homeigw->result() as $igww){
echo $igww->id;
}
以下是我的观看页面：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Report Generator ASR/ACD</title>
<script type="text/javascript" src="<?php echo base_url();?>js/tcal.js"></script>
<link rel="stylesheet" type="text/css" href="<?php echo base_url();?>style/tcal.css" />
<link rel="stylesheet" type="text/css" href="<?php echo base_url();?>style/css/menu.css" />
<style>
#dashboard { width: 100%;height:auto;background-color: #ffffff;}
#dashboard .dbox{width: 320px;height: 300px;float:left;padding: 5px;margin: 15px;border: 1px solid #cccccc;}
#dashboard .dbox h2{background-color: #123;color: #FF9933;font-size: 10pt;font-weight: normal;padding-left:10px;height: 20px;text-align: center;padding-top:5px; }
#dashboard .dbox ul li{word-spacing: 70px; }
#dashboard .dbox ul li:hover{background-color: #123;color: #FFFFFF; }
#dashboard .dbox ul { width:280px; height: 200px;overflow: scroll;}
#dashboard .dbox p{width: 130px;padding: 5px;background-color: #123;margin-left:5px;color: #FF9933;}
.floatleft{float:left;}
.floatright{ float:right;}
</style>
<script type="text/javascript" src="<?php echo base_url(); ?>js/tabber.js"></script>
<link rel="stylesheet" href="<?php echo base_url(); ?>js/example.css" TYPE="text/css" MEDIA="screen">
<script type="text/javascript">
document.write('<style type="text/css">.tabber{display:none;}<\/style>');
</script>
</head>
<body>
<div id="container">
<div id="body">
<h1><br /><strong>Report Generator</strong></h1>
<?php date_default_timezone_set('Asia/Dacca'); include 'menu.php';?>
<?php
$preday = date('Y-m-d',strtotime('-190 days'));
$today = date('Y-m-d');
include "./chart/libchart/classes/libchart.php";
$chart = new VerticalBarChart();
$dataSet = new XYDataSet();
$query = mysql_query("SELECT DATE_FORMAT(c_date,'%Y-%m-%d') as DATE,
sum(answer_time_duration) as total from data
where DATE_FORMAT(c_date,'%Y-%m-%d') >= '$preday' AND DATE_FORMAT(c_date,'%Y-%m-%d') <= '$today' AND
trunc_group IN
(0,1,111,211,311,312,511,611,121,221,321,322,421,422,521,621,961,100,101,1211,1212,1311,1312,
1511,1611,2011,2211,2511,2611,2911,3011,3611,3711,3911,1811,2311)
group by DATE_FORMAT(c_date,'%Y-%m-%d')") or die(mysql_error());
while($row = mysql_fetch_array($query)){$dataSet->addPoint(new Point($row['DATE'], round($row['total']/60)));}
$chart->setDataSet($dataSet);
$chart->render("./chart/generated/chart.png");
?>
<img alt="" src="<?php echo base_url();?>/chart/generated/chart.png" style="border: 1px solid gray;"/>
<div id="dashboard">
<div class="tabber">
<div class="tabbertab">
<h2>IGW </h2>
<p>
<table id="datatable" border="1" cellpadding="0" cellspacing="0" width="100%">
<thead>
<tr>
<td>Date</td>
<td>Trunk ID</td>
<td>Trunk Name</td>
<td>Call Attempt Time</td>
<td>Alert Times</td>
<td>Answer Time Duration (MIN)</td>
</tr>
</thead>
<tbody>
<?php $homeigw = $this->db->query("SELECT * FROM data INNER JOIN trunk_info ON trunk_id = trunc_group WHERE trunk_type = 'igw'");
foreach($homeigw->result() as $igww){
echo $igww->id;
}
?>
</tbody>
</table>
<div style="clear:both;"></div>
</p>
</div>
<div class="tabbertab">
<h2>ANS - INT</h2>
<p>Tab 2 content.</p>
</div>
<div class="tabbertab">
<h2>ANS IGW</h2>
<p>Tab 3 content.</p>
</div>
</div>
<!-- END -->
<div style="clear:both;"></div>
</div>
</div>
</div>
</div>
</body>
</html>
任何有价值的建议都将受到赞赏。
答案 0 :(得分：1)
如果您使用Codeigniter，为什么不使用codeigniter的MVC？你不应该在View.php上查询。而是在Model.php
上做MODEL：
public function MODELFUNC()
{
$homeigw = $CI->db->query("SELECT * FROM data INNER JOIN trunk_info ON trunk_id = trunc_group WHERE trunk_type = 'igw'");
if ($homeigw->num_rows() > 0 )
{
$result = $homeigw->result();
}
return $result;
}
控制器：
public function CONTFUCN()
{
$data['varData'] = $this->MODEL->MODELFUNC();
$this->load->view(<ViewName>, $data);
}
查看：
<?php <tr><th>ID</th></tr>
foreach($varData in varDat)
{
echo "<td>" . $varDat->id ."</td>";
}
?>
答案 1 :(得分：0)
在视图页面$中，这可能无法正常工作
试试这个
$CI= &get_instance();
<?php $homeigw = $CI->db->query("SELECT * FROM data INNER JOIN trunk_info ON trunk_id = trunc_group WHERE trunk_type = 'igw'");
foreach($homeigw->result() as $igww){
echo $igww->id;
}
答案 2 :(得分：0)
首先检查您的查询是否返回结果。要检查这一点，您可以将if条件设置为：
if($homeigw->num_rows() >0) {
foreach($homeigw->result() as $igww){
echo $igww->id;
}
} else {
echo 'empty result set';
}
答案 3 :(得分：0)
首次使用
的print_r（$ homeigw）; 出口;
检查结果，然后相应地使用foreach循环。
答案 4 :(得分：0)
<?php
class plan_model extends CI_Model {
public function __construct()
{
$this->load->database();
}
public function getevents()
{
$json = array();
$query =$this->db->query("(select a.id,REPLACE(a.interest,'@',',') AS title,a.start,a.end,a.allDay,a.className,a.color from ta_plan a ) union (select b.id,substr(c.name,1,15) AS title,b.start,b.end,b.allDay,b.className,b.color from ta_trips b join ta_city c on b.city_id=c.id order by b.id)");
echo json_encode($query->result_array());
}
public function getplandetails($id)
{
$query =$this->db->query("SELECT id,city_id,creator_id,plan_desc,standard_activity_id,meeting_address,capacity,start,end,start_time,end_time,title,interest FROM ta_plan where id ='".$id."' ");
return $query->row_array();
}
public function getactivitydetails($id)
{
$query =$this->db->query("SELECT id,interest,city_id,start FROM ta_plan where creator_id ='".$id."' ");
return $query->result_array();
}
public function gettripdetails($id)
{
$query =$this->db->query("SELECT hotel,hotel_address,city_id,start,end FROM ta_trips where traveller_id ='".$id."' ");
return $query->result_array();
}
public function getprofiledetails($id)
{
$query =$this->db->query("SELECT email_id,public_email,facebook_id,public_facebook_id,photo,public_photo,desk_photo,name,public_name,nationality,public_nationality,gender,public_gender,dob,public_dob,marital_status,public_marital_status,home_location,public_home_location,traveller_type,public_traveller_type,traveller_profession,public_traveller_profession,traveller_interest,public_traveller_interest FROM ta_user_profile where id ='".$id."' ");
return $query->row_array();
}
public function gethoteletails($id)
{
$query =$this->db->query("SELECT id,name,email_id,location,address,phone,description,facebook_id,photo FROM ta_hotel_profile where id ='".$id."' ");
return $query->row_array();
}
public function getactivitysearch($start,$end)
{
if($start!='' && $end!='')
{
$query =$this->db->query("select b.creator_id,a.name as username,a.gender,a.home_location,a.dob,a.desk_photo,a.photo,a.email_id,b.id,b.interest,c.name as cityname,b.start from ta_user_profile a join ta_plan b on a.id=b.creator_id join ta_city c on b.city_id=c.id where b.start >='".$start."' and b.end <='".$end."' ");
}
else if($start!='' && $end=='')
{
$query =$this->db->query("select b.creator_id,a.name as username,a.gender,a.home_location,a.dob,a.desk_photo,a.photo,a.email_id,b.id,b.interest,c.name as cityname,b.start from ta_user_profile a join ta_plan b on a.id=b.creator_id join ta_city c on b.city_id=c.id where b.start <='".$start."' and b.end >='".$start."' ");
}
else if($start=='' && $end!='')
{
$query =$this->db->query("select b.creator_id,a.name as username,a.gender,a.home_location,a.dob,a.desk_photo,a.photo,a.email_id,b.id,b.interest,c.name as cityname,b.start from ta_user_profile a join ta_plan b on a.id=b.creator_id join ta_city c on b.city_id=c.id where b.start <='".$end."' and b.end >='".$end."' ");
}
return $query->result_array();
}
public function get_activity_list($start)
{
$query =$this->db->query("SELECT id,city_id,creator_id,plan_desc,standard_activity_id,meeting_address,capacity,start,end,start_time,end_time,title FROM ta_plan where start <='".$start."' and end >='".$start."' ");
return $query->result_array();
}
public function autocomplete_city($val)
{
$query =$this->db->query('select id,country,state,name from ta_city where name LIKE "%'.$val.'%"');
return $query->result();
}
public function get_hotel_list($val)
{
$query =$this->db->query('select id,name from ta_hotel_profile where location LIKE "%'.$val.'%"');
return $query->result_array();
}
public function get_standard_list($val)
{
$query =$this->db->query('select id,title,description,picture from ta_standard_activity where destination_name LIKE "%'.$val.'%"');
return $query->result_array();
}
public function get_hotel_addr($val)
{
$query =$this->db->query("select id,name,address from ta_hotel_profile where id='".$val."' ");
return $query->result_array();
}
public function getcityname($val)
{
$query =$this->db->query("select name from ta_city where id='".$val."' ");
return $query->row_array();
}
public function getusername($val)
{
$query =$this->db->query("select name,id from ta_user_profile where id='".$val."' ");
return $query->row_array();
}
public function get_std_desc($val)
{
$query =$this->db->query("select id,description,picture,title from ta_standard_activity where id='".$val."' ");
return $query->result_array();
}
public function savetrip($city,$hotelid,$hotel,$hoteladdr,$start,$end,$start_time,$end_time,$id)
{
$insert_data = array(
'city_id' => $city,
'hotel_id' => $hotelid,
'hotel' => $hotel,
'hotel_address' => $hotel_addr,
'start' => $start,
'end' => $end,
'start_time'=>$start_time,
'end_time'=>$end_time,
'traveller_id'=>$id
);
$this->db->insert('ta_trips', $insert_data);
return $this->db->insert_id();
}
public function save_temp_hotel($hotel,$hoteladdr,$id)
{
$insert_data = array(
'hotel_name' => $hotel,
'hotel_address' => $hoteladdr,
'hotel_id'=>$id
);
$this->db->insert('ta_hotel_temp', $insert_data);
}
public function saveactivity($cityid,$stdid,$chk_interest,$title,$description,$start,$end,$start_time,$end_time,$capacity,$flag,$address,$meeting_loc,$id)
{
$insert_data = array(
'city_id' => $cityid,
'standard_activity_id' => $stdid,
'interest' => $chk_interest,
'title' => $title,
'plan_desc' => $description,
'start' => $start,
'end' => $end,
'start_time'=>$start_time,
'end_time'=>$end_time,
'capacity' => $capacity,
'approval_flag' => $flag,
'meeting_address' =>$address,
'meeting_coordinates'=>$meeting_loc,
'creator_id'=>$id
);
return $this->db->insert('ta_plan', $insert_data);
}
}
?>
答案 5 :(得分：0)
class plan_model extends CI_Model {
public function __construct()
{
$this->load->database();
}
public function getevents()
{
$json = array();
$query =$this->db->query("(select a.id,REPLACE(a.interest,'@',',') AS title,a.start,a.end,a.allDay,a.className,a.color from ta_plan a ) union (select b.id,substr(c.name,1,15) AS title,b.start,b.end,b.allDay,b.className,b.color from ta_trips b join ta_city c on b.city_id=c.id order by b.id)");
echo json_encode($query->result_array());
}
}