我有一个看起来像这样的数组 -
Array
(
[0] => Array
(
[id] => 1
[date] => 23-09-2015
[name] => Public Transport
[group_id] => 1
)
[1] => Array
(
[id] => 2
[date] => 23-09-2015
[name] => Parking
[group_id] => 1
)
[2] => Array
(
[id] => 4
[date] => 23-09-2015
[name] => Food
[group_id] => 2
)
[3] => Array
(
[id] => 3
[date] => 23-09-2015
[name] => Fix
[group_id] => 3
)
[4] => Array
(
[id] => 4
[date] => 23-09-2015
[name] => Entertainment
[group_id] => 3
)
)
我想在表格中列出，并根据组ID
进行分组该小组有交通[1]，住宿[2]和津贴[3]。 [4]未分组。
表结构需要如下所示。
ID| Date | Name |
---------------------------------
---------------------------------
1 |23-09-2015|Public Transport
2 |23-09-2015|Parking
---------------------------------
TRANSPORTATION
---------------------------------
3 |23-09-2015|Food
---------------------------------
ACCOMMODATION
---------------------------------
4 |23-09-2015|Fix
---------------------------------
ALLOWANCE
---------------------------------
5 |23-09-2015|Entertainment
正如你在这里看到的那样，id 1＆amp; 2个来自交通，3个住宿，4个住宿和娱乐没有团体。 如果任何组dosenot在数组中有数据，那么它应该显示NO DATA AVAILABLE
---------------------------------
3 |23-09-2015|Food
---------------------------------
ACCOMMODATION
---------------------------------
No data available
---------------------------------
ALLOWANCE
---------------------------------
<?php
$j = 1;
foreach ($summary as $list) {
if ($j != $list['group_id']) {
if ($j == 1) {
$group = 'Transportation';
} else if ($j == 2) {
$group = 'Accomodation';
} else if ($j == 3) {
$group = 'Allowances';
} else {
$group = '';
}
?>
<tr class="summary-title">
<td colspan="7"><?php echo $group; ?></td>
</tr>
<?php } ?>
<tr>
<td><?php echo $list['id']; ?></td>
<td><?php echo $list['date']; ?></td>
<td><?php echo $list['name']; ?></td>
</tr>
<?php
$j = $list['group_id'];
}
?>
数组按照group_id的顺序排序。组ID将始终具有值1,2,3,4。
部分工作。但是当group_id数组中没有值时，我无法显示NO DATA AVAILABLE。此外，如果group_id = 4在数组中不可用，那么它不会在底部设置ALLOWANCE，因为数组循环在设置值之前完成。
答案 0 :(得分：0)
编辑：删除了整个页面，因为它现在变得混乱。
$summary = array();
$summary[] = array('id'=>1, 'date'=>"23-09-2915", 'name'=>"Public transpor1", 'group_id'=> 1);
$summary[] = array('id'=>2, 'date'=>"24-09-2915", 'name'=>"Public transpor2", 'group_id'=> 3);
$summary[] = array('id'=>3, 'date'=>"25-09-2915", 'name'=>"Public transpor3", 'group_id'=> 1);
$summary[] = array('id'=>4, 'date'=>"26-09-2915", 'name'=>"Public transpor4", 'group_id'=> 2);
$summary[] = array('id'=>5, 'date'=>"27-09-2915", 'name'=>"Public transpor5", 'group_id'=> 1);
$newarray = array('Transportation'=>array(),'Accomodation'=>array(),'Allowances'=>array(),'Not found'=>array());
foreach ($summary as $list) {
if(isset($list['group_id'])){
$testid = $list['group_id'];
}else{
$testid = 4;
}
if ($testid == 1) {
$group = 'Transportation';
} else if ($testid == 2) {
$group = 'Accomodation';
} else if ($testid == 3) {
$group = 'Allowances';
} else {
$group = 'Not found';
}
$newarray[$group][] = $list;
}
echo "<table>";
foreach($newarray as $key => $array){
echo "<tr><th>".$key."</th></tr>";
if(count($array) > 0){
foreach($array as $row){
echo "<tr><td>".$row['name']."</td></tr>";
}
}else{
echo "<tr><td>Not data</td></tr>";
}
}
echo "</table>";
这应该做你现在想要的但是认真，付出一些努力lol。如果您对问题不太清楚，我将不会继续编辑它，直到它完成您想要的内容
答案 1 :(得分：0)
希望这对你有所帮助。这是一个小例子。
转储：
/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET NAMES utf8 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
CREATE DATABASE IF NOT EXISTS `my` /*!40100 DEFAULT CHARACTER SET utf8 */;
USE `my`;
CREATE TABLE IF NOT EXISTS `category` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(255) NOT NULL,
`group_id` int(11) DEFAULT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `name` (`name`),
KEY `FK_category_category_group` (`group_id`),
CONSTRAINT `FK_category_category_group` FOREIGN KEY (`group_id`) REFERENCES `category_group` (`id`) ON DELETE SET NULL ON UPDATE SET NULL
) ENGINE=InnoDB AUTO_INCREMENT=8 DEFAULT CHARSET=utf8;
/*!40000 ALTER TABLE `category` DISABLE KEYS */;
INSERT INTO `category` (`id`, `name`, `group_id`) VALUES
(1, 'Public Transport', 1),
(2, 'Parking', 1),
(3, 'Food', 2),
(4, 'Fix', 3),
(5, 'Entertainment', 3),
(6, 'Category without group 1', NULL),
(7, 'Category without group 2', NULL);
/*!40000 ALTER TABLE `category` ENABLE KEYS */;
CREATE TABLE IF NOT EXISTS `category_group` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(255) NOT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `name` (`name`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;
/*!40000 ALTER TABLE `category_group` DISABLE KEYS */;
INSERT INTO `category_group` (`id`, `name`) VALUES
(2, 'Accommodation '),
(3, 'Allowance '),
(1, 'TRANSPORTATION');
/*!40000 ALTER TABLE `category_group` ENABLE KEYS */;
/*!40101 SET SQL_MODE=IFNULL(@OLD_SQL_MODE, '') */;
/*!40014 SET FOREIGN_KEY_CHECKS=IF(@OLD_FOREIGN_KEY_CHECKS IS NULL, 1, @OLD_FOREIGN_KEY_CHECKS) */;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
PHP：
$categoriesByGroups = array();
$pdo = new PDO('mysql:host=localhost;dbname=my', 'root');
$query = $pdo->prepare('
SELECT c.id AS category_id,
c.name AS category_name,
c.group_id,
g.name AS group_name
FROM category AS c
LEFT JOIN category_group AS g ON g.id = c.group_id
');
$query->execute();
while ($row = $query->fetch(PDO::FETCH_ASSOC)) {
if ($row['group_id'] != null) {
$groupId = $row['group_id'];
} else {
$groupId = 0;
}
if (!isset($categoriesByGroups[$groupId])) {
$categoriesByGroups[$groupId] = array(
'categories' => array(),
'group' => $groupId == null ? 'Without group' : $row['group_name']
);
}
$categoriesByGroups[$groupId]['categories'][] = $row['category_name'];
}
foreach ($categoriesByGroups as $group) {
echo 'Group: ' . $group['group'] . '<br/>';
echo 'Categories: <br/>';
foreach ($group['categories'] as $category) {
echo $category . '<br/>';
}
echo '--------------------------------<br/>';
}