如何删除blank array()php
我正在使用get_where查询检索CI中的帖子,我的where变量正在检查类别是this 我必须在foreach循环中传递category数组以获取_where查询,但如果category下没有post,query将返回空白数组 我的类别数组:如何删除blank array()php,php,arrays,codeigniter,Php,Arrays,Codeigniter,我正在使用get_where查询检索CI中的帖子,我的where变量正在检查类别是this 我必须在foreach循环中传递category数组以获取_where查询,但如果category下没有post,query将返回空白数组 我的类别数组: Array ( [0] => Array ( [0] => 341 [1] => Email Templates [2] => email-tem
Array (
[0] => Array (
[0] => 341
[1] => Email Templates
[2] => email-templates
[3] => marketing
[4] => Email Templates
[5] => 340 )
[1] => Array (
[0] => 342
[1] => Newsletters
[2] => newsletters
[3] => marketing
[4] => Newsletters
[5] => 341 )
[2] => Array (
[0] => 343
[1] => e-Flyers
[2] => e-flyers
[3] => marketing
[4] => e-Flyers
[5] => 341 )
[3] => Array (
[0] => 344
[1] => Catalogs
[2] => catalogs
[3] => marketing
[4] => Catalogs
[5] => 341 )
[4] => Array (
[0] => 345
[1] => Email Stationery
[2] => email-stationery
[3] => marketing
[4] => Email Stationery
[5] => 341 ) )
上面的数组是我的$subcatid
我的控制器:
public function index()
{
$data['post'] = $this->post->get_category_post($subcatid);
print_r($data['post']);
$this->load->view('frontend/post/category_post', $data);
}
在get_类别_post中;后功能
function get_category_post($up_cat)
{
foreach($up_cat as $cat){
$query = $this->db->get_where('accmark_posts', array('up_sub_cat' => $cat[0]));
$result = $query->result();
print_r($result);
}
}
这个函数给我以下数组
Array ( )
Array ( )
Array ( )
Array ( )
Array ( )
Array ( )
Array ( )
Array ( )
Array ( )
Array ( )
Array ( )
Array ( )
Array ( )
Array (
[0] => stdClass Object (
[up_id] => 1
[user_id] => mediaexhibitor
[up_time] => 2015-02-15 16:24:11
[up_cat] => 340
[up_name] => RealEsta - Real Estate Email Marketing
[up_name_slug] => realesta-real-estate-email-marketing )
我想从结果中删除此空白数组()。使用
数组过滤器($result)
。如果不提供回调函数作为第二个参数,该函数将过滤掉所有等于false的数组项,例如空数组。在其中添加If
条件
例如:
$errors = array_filter($_POST);
if (empty($errors)) {
echo "array is empty.";
}
else
{
echo "It is not empty.";
}
或
数组中有两个元素,这并不意味着数组是空的。作为快速解决方法,您可以执行以下操作:
$errors = array_filter($errors);
if (!empty($errors)) {
}
array\u filter()
函数的默认行为将从数组中删除所有等于null
、0
、'
或false
否则,在您的特定情况下,
empty()
如果至少有一个元素具有“empty”值,则构造将始终返回true
。整理您的格式,以可读的方式呈现问题并帮助人们帮助ypu