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通过多维数组的PHP循环

foreach multidimensional-array loops codeigniter php

Udders · 技术社区 · 15 年前

我目前正在一个基于CodeIgniter的网站上工作,我目前正在查询数据,我认为可能有3个数组可以作为数组返回,每个数组都有不同数量的结果,我的问题是,我不能终生循环通过我目前拥有的数组,

我的模型像这样

public function get_special_backgrounds() {
    $this->db->select('*');
    $this->db->from('background');
    $this->db->where('is_special', 1);

    $query = $this->db->get();
    return $query->result_array();
}

我的控制器

enter public function index() {
//  $this->output->enable_profiler(TRUE);
    $data = array();
    if($query = $this->category_model->get_all_online()) {
        $data['main_menu'] = $query;
    }
    $this->load->model('image_model');
    /*
    * Sort out the users backgrounds, basically do a check to see if there is a 'special' background
    * if there is not a 'special' background then IF the user is logged in and has a background of there
    * own show that one, if not show a generic one, if they are not logged in show a generic one
    */
    $image = array();
    if ($query = $this->image_model->get_special_backgrounds()) {
        $image = $query;
    }

    $data = array_merge($data, $image);
    die(print_r($data));
    $this->load->view('home/main_page.php', $data);
}

gets返回的数组如下,

Array
(
    [main_menu] => CI_DB_mysql_result Object
        (
            [conn_id] => Resource id #28
            [result_id] => Resource id #35
            [result_array] => Array
                (
                )

            [result_object] => Array
                (
                )

            [current_row] => 0
            [num_rows] => 1
            [row_data] => 
        )

    [special] => Array
        (
            [0] => Array
                (
                    [background_id] => 6
                    [background_name] => Master-Backgrounds.png
                    [background_path] => /Users/Simon/Sites/mysite/media/uploads/backgrounds/
                    [is_special] => 1
                    [background_date_uploaded] => 1262687809
                    [users_user_id] => 1
                    [users_user_group_group_id] => 1
                )

            [1] => Array
                (
                    [background_id] => 11
                    [background_name] => Master-mysite-Template.png
                    [background_path] => /Users/Simon/Sites/mysite/media/uploads/backgrounds/
                    [is_special] => 1
                    [background_date_uploaded] => 1262795313
                    [users_user_id] => 5
                    [users_user_group_group_id] => 2
                )

        )

)
1

4 回复 | 直到 14 年前

Matteo Riva 15 年前

你需要循环 special 数组的一部分?

foreach ( $data['special'] as $row ) {
    // do stuff with the $row array
}

Nicholas 14 年前

它是一个对象,所以不能像数组一样循环遍历它。我确实看到了你想做的事情,也明白了为什么这看起来是有道理的,但是要想知道我在说什么,试试这个:

改变这一点:

public function get_special_backgrounds() {
    $this->db->select('*');
    $this->db->from('background');
    $this->db->where('is_special', 1);

    $query = $this->db->get();
    return $query->result_array();
}

对此:

public function get_special_backgrounds() {
    $this->db->select('*');
    $this->db->from('background');
    $this->db->where('is_special', 1);

    $query = $this->db->get();
    return $query;
}

和

改变这一点:

$image = array();
if ($query = $this->image_model->get_special_backgrounds()) {
    $image = $query;
}

对此:

   if($images = $this->image_model->get_special_backgrounds()) {
       foreach($images->result_array() as $image) {
          echo "<pre>";
          print_r($image);
          echo "</pre></br >";
       }
   }

Natkeeran 15 年前

尝试foreach

$arr = (your array);

foreach ($arr as $key => $insideArrays) {
 foreach ($insideArrays as $k2 => $insideInsideArrays){
  ..........
 }

}

leepowers 15 年前

看起来像一个结果数组,开头有一个奇数元素。我将去掉第一个元素,然后循环使用它:

array_shift($data);
foreach ($data as $row) {
  // Do stuff with $row
  var_dump($row);
}