CodeIgniter：模型包含函数时为空白页

Question

i'm using codeigniter for a website project. when i include a model, it will work as long as no function is implemented (except the constructor).

this configuration works:

class Xyz_model extends CI_Model {

    function __construct() {

    }
}

this doesn't:

class Xyz_model extends CI_Model {

    function __construct() {

    }

    public function get_xyz() {
        return [        
            "xy" => ["xy"],
            "yz" => ["xy"],
            "zz" => ["xy","zx","zy"]
        ];
    }
}

there is not even an database access... and i have no clue why it is not working.

Answer 1

You are extending the core model class, but the child's constructor is being used in placed of the parents:

parent::__construct();

Add that to your models constructor.

Answer 2

use this

In model

class Xyz_model extends CI_Model {

    function __construct() {

    }

    public function get_xyz() {
        $array = array(
            'xy' => 'xy',
            'yz' => 'xy',
            'zz' => array("xy","zx","zy")
        );
        return $array;
    }
}

In controller

$new = $this->Xyz_model->get_xyz()

print_r($new);

so output will be

Array ( [xy] => xy [yz] => xy [zz] => Array ( [0] => xy [1] => zx [2] => zy ) )