两个foreach如何遍历出父类和子类在前台？
两个foreach如何遍历出父类和子类在前台？这是数据库表 数据
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zm/fOdEWUz75/swKMM8jfvz3muDs6xOPUyrkpxjOT9i+aYDlbef+iwyaYx7x9XA5Wr6GQPnmPrn9ZU6s6vzHSL9LFcleIYyfuPu2XjUMe8f95MkLIIMTMlbzLHFaMsx0jev2jOPW/+dIYSzCunR+O4SpTluMr3K5DQr6wTl0GrsYIc5zK3mco6cRm0GmscK1XWicug1VjjWKmyTlwGrcYax0qVdeIyaDWWxHGLFtONxnGLOUSrJ7QO5fXc4YjQaaxxrFRZJy69VmOz5XiV9x+hPOb9M+LkFjiiclDoxKXXamyeHJt5/6HKZt4/2crvutA47rEtpvNGQY5r1aN38/5Dlc28f+t8lv3z+tzbIuUNnjPemO9Laq6+2C0oynKM5P2L5oLGQ+b9xylbW0GCW6Ujyh2wx1YtjkWeRI7NF+Z/+9vZtfonxjo45vP+RXP4YMi8/xRlK+8f8RDKcYpO9rCwI0PkGJyP3dcpUZxjMe9fNAeOhMz7T1cmN+hlAud4ruuK3rNpqaufcaFclmMk7180hwwjdKt0UNnK+0ecgByLz3K6HLsrCpdjcomc4rksx0jev2hOHEMoxKCyNRODKIMck69DdQpFxvWxe9KCGLyoGGU5RvL+RXPiGNy8f3DYTAdyOYGgvLEc+1bG7nRrzdnIRcUoyzGS9y+a46/i5v3jw/a1jnn/bhO/SbqovIpZcuwq+HT4OTsuynKM5P2L5virWHn/QcMmm8y8f7IDjzLIn7gonC7HIp3uMkP7+hjJ+xfNMR2svP/QYZNNY94/rgYqV9HJHj5jPhzdNfH05mMk7180x3TojLz/iGH7WkWImSl5YzmuG2U5RvL+RXPuefOXUSjBvHJ6NI6rRFmOq3y/Agn9yjpx6bUaK8hxLnObqawTl16rscaxUmWduPRajTWOlSrrxKXXaqxxrFRZJy69VmONY6XKOnHptRpL4rhFi+lG47jFHKLVxVqH8nrucEToNNY4VqqsE5dBq7HZcryqXxGhPNavYMTJrZxE5aDQicug1dg8OTbrV4Qqm/UryFZ+95DGcQfsqmb1GSPRVRGOa+2r4NavCFU261dY57PsA2l97zZap0SISDHGvKkg7H54HbVPWWiU5RipXyGaCxoPWb8iTtna0hSBONRzHC7lAplKQWM8lOSFtHPM168QzeGDIetXpChb9SsQD5Pm2IwIjsX5mBS3ZuW4KM6xWL9CNAeOhKxfka5MbjTNBK7MP7kpcoy83beuUM0xUr9CNIcMg0z9T1e26lcgTubBccQvCmYydqfkic3HSP0K0Zw4hlCIQWVrJgZR3liOcYVhcutjpH6FaE4cg1u/Ahw204FcTiAoZ3nMuE6JiP4BEydj8vwEOEbqV4jm+Ku49SvwYftax/oVbhOzszTueVDMcRZj/FLBXWP4Pg7iUZZjpH6FaI6/ilW/ImjYZJNZv4LswKM8aY6ZFS1ujFwzBJ2JiLIcI/UrRHNMB6t+ReiwyaaxfgWuBipX0ckePmM++sklhNUhl6tSHCP1K0RzTIfOqF8RMWxfqwgxMyVvLMd1oyzHSP0K0Zx73vzdF0owr5wejeMqUZbjKt+vQEK/sk5cBq3GCnKcy9xmKuvEZdBqrHGsVFknLoNWY41jpco6cRm0GmscK1XWicug1VgSxy1aTDcaxy3mEK2e0DqU13OHI0KnscaxUmWduPRajc2W41Xef4TymPfPiJNbOYnKQaETl16rsXlybOb9hyqbef9kK797SOPYio7a+YbvEO2qCMe19lVw8/5Dlc28f+t8ln0ge8X7jqUY67CNmDpqU17+omKU5RjJ+xfNBY2HzPuPU7a2NEUgBpX5x4zrZI9EY+Tbxdl3AvMxkvcvmsMHQ+b9pyhbef+Ih0lzbEYJjseZ2O2QSHNxjsW8f9EcOBIy7z9dmdxomonGMXPSXD9MiWMk7180hwyDTJlOV7by/hEnoLLa9fEqEtfHzEl3np4Ax0jev2hOHEMoxKCyNRODKCPK+ufjQp/zyLk5/UNeX5pjJO9fNCeOwc37B4fNdCCXEwjKM+CYR0rkmPlgRyI7gc95SN6/aI6/ipv3jw/b1zrm/btNzM7SiPIqNHMsUsVzTDLKa/r+shEUZTlG8v5Fc/xVrLz/oGGTTWbeP9mBRxnkT+f6GPlFz3NsSQU16eUYyfsXzTEdrLz/0GGTTWPeP64GKlfRyR6iMfJnYJyYyab0JXJZjpG8f9Ec06Ez8v4jhu1rFSFmpuTGcZUoyzGS9y+ac8+bP8GhBPPK6dE4rhJlOa7y/Qok9CvrxKXXaqwgx7nMbaayTlx6rcYax0qVdeLSazXWOFaqrBOXXquxxrFSZZ249FqNJXHcosV0o3HcYg7ROG4xh2gct5hDxHPcdZV/BrpuuYa3pEjlupyok3FcE41IFsf/k5zXTaAH7uFZrat/rplj0oZ5uGeYwyeImwHcQg805bkXwub/EjBkBTqJefIAAAAASUVORK5CYII=
要在前台显示成
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每个父类下面还在再遍历出子类的名字
这是控制器代码
function show(){
$this->db->where(array('parent'=>0));
$data['parent']=$this->db->get('type')->result_array();
//var_dump($data);
foreach($data['parent'] as $value){
$id=$value['id'];
$this->db->where(array('parent'=>$id));
$data['child']=$this->db->get('type')->result_array();
}
//var_dump($data);
$this->load->view('templates/header');
$this->load->view('index/index',$data);
$this->load->view('templates/floor');
}
不知道该怎么在前台遍历显示？求教
本帖最后由 大道达人 于 2012-10-11 13:10 编辑
$data = array();
$parent = $this->db->where(array('parent'=>0))->get('type')->result_array();
foreach ($parent as $value) {
//获取子类
$child = $this->db->select('type')->where(array('parent' => $value['id']))->get('type')->result_array();
$data[$value['type']] = array_values($child);
}
大道达人 发表于 2012-10-11 12:48 static/image/common/back.gif
谢谢了， 但是数组是这个结构，前台该怎么遍历呢？
array(4) {
["汽车"]=>
array(2) {
=>
array(1) {
["type"]=>
string(9) "比亚迪"
}
=>
array(1) {
["type"]=>
string(6) "奥拓"
}
}
["服装"]=>
array(2) {
=>
array(1) {
["type"]=>
string(6) "美邦"
}
=>
array(1) {
["type"]=>
string(6) "以纯"
}
}
["地产"]=>
array(0) {
}
前台我写成这样出不来哦
<ul>
<?php foreach($data as $key=>$value): ?>
<li><?php echo $key; ?></li>
<?php echo $value['type']; ?>
<?php endforeach;?>
</ul>
继续、驕傲 发表于 2012-10-11 16:08 static/image/common/back.gif
谢谢了， 但是数组是这个结构，前台该怎么遍历呢？
array(4) {
["汽车"]=>
foreach ($data as $key => $value)
{
echo "<li>$key</li>";
if ($value)
{
echo "<ul>";
foreach ($value as $v)
{
echo "<li>".$v['type']."</li>";
}
echo "</ul>";
}
}
echo "</ul>";
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