访问数组值时非法字符串偏移量

Question

I have the following array called $shops:

Array
(
    [0] => Array
        (
            [id] => 10
            [open] => Array
                (
                    [0] => Array
                        (
                            [day] => Monday
                            [start] => 09:00:00
                            [end] => 17:00:00
                        )

                    [1] => Array
                        (
                            [day] => Tuesday
                            [start] => 09:00:00
                            [end] => 17:00:00
                        )

                    [2] => Array
                        (
                            [day] => Thursday
                            [start] => 09:00:00
                            [end] => 17:00:00
                        )
                )
        )
)

When I loop through it similar to the following I get Illegal string offset 'day'

foreach($shops as $shop)
{
    foreach($shop['open'] as $open)
    {
        print_r($open);
        echo $open['day'];
    }
}

The print_r($open) appears correct:

Array
(
    [day] => Monday
    [start] => 09:00:00
    [end] => 17:00:00
)

I must be doing something stupid. What's the problem?

Answer 1

I have write these code in details with check all iteration. In second loop first iteration has no day index and it's value is 10. you can check output

$count=0;
echo "<pre>";
foreach ($shops as $shop) {
    print_r($shop);
    echo "first
";
    foreach($shop as $open)
    {
        echo "second
";
        print_r($open);
        if(isset($open[0]))
        {
            foreach ($open as  $value) {
                print_r($value['day']);
            }
        }


    }

}

Also you can Check this code. and output of this code is Here . further you can split this in nested foreach loop

<?php

$shops = Array
(
    0 => Array
        (
            'id' => 10,
            'open' => Array
                (
                    0 => Array
                        (
                            'day' => 'Monday',
                            'start' => '09:00:00',
                            'end' => '17:00:00',
                        ),

                    1 => Array
                        (
                            'day' => 'Tuesday',
                            'start' => '09:00:00',
                            'end' => '17:00:00',
                        ),

                    2 => Array
                        (
                            'day' => 'Thursday',
                            'start' => '09:00:00',
                            'end' => '17:00:00',
                        ),
                )
        )
);


foreach ($shops[0]['open'] as $open) {
    print_r($open['day']);
    echo "<br>";
}