CodeIgniter变量数据/值未从Controller传递到视图

Question

I need to echo out a variable value in the CodeIgniter view file. But when I run the site with...

<?php echo $highcharts; ?>

...on line 108, in the view, it gives an error. Please help me to echo out the value, so I can use it in HighCharts.

A PHP Error was encountered
Severity: Notice
Message: Undefined variable: highcharts
Filename: reports/bqt_daily_income_view.php
Line Number: 108

This is my Controller:

function bqt_daily_income() {

    $json_data = array();
    $query = $this->db->query("SELECT time_stamp,  SUM(paid) AS income  FROM payments WHERE type = 'Banquet Reservation' GROUP BY time_stamp ORDER BY time_stamp ASC LIMIT 30");
    if ($query->num_rows() > 0) {
    foreach($query->result_array() as $row) {
    $json_data['data'][] = (int) $row['income'];
        }
    }
    $highcharts = json_encode($json_data);

    //return $json_data;
    //print_r($json_data); // Array ( [data] => Array ( [0] => 1700 [1] => 5000 ) ) 

    //print_r($highcharts); // {"data":[1700,5000]}

    $this->load->view('reports/bqt_daily_income_view', $highcharts);

Answer 1

Try like:

$this->load->view('reports/bqt_daily_income_view', array('highcharts' => $highcharts));

In view file:

echo $highcharts;

Alternative post method:

$this->data['highcharts'] = json_encode($json_data);
$this->data['other']      = "bla bla bla";

$this->load->view('reports/bqt_daily_income_view', $this->data);

In view file:

echo $highcharts;
echo $other;