Question 234701 in PHP Question posted in
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PHP access sub array list gone wrong result and length

I have an PHP Array with Object with below sample:

Array
(
[0] => Array
    (
        [menuID] => 1
        [menuName] => AA
        [menuURL] => 
        [subMenu] => Array
            (
                [0] => Array
                    (
                        [subMenuID] => 1
                        [subMenuName] => Sub 1
                        [subMenuURL] => ab
                    )

                [1] => Array
                    (
                        [subMenuID] => 2
                        [subMenuName] => Sub 2
                        [subMenuURL] => ac
                    )

            )

    )

[1] => Array
    (
        [menuID] => 2
        [menuName] => AB
        [menuURL] => 
        [subMenu] => 
    )

)

Now I need to count and access array in subMenu but got strange value there.

I’m using this code:

foreach ($headerMenu as $list) {
    //print_r($list['menuName']);

    echo "<pre>";
    print_r(count($list['subMenu']));
}

It show me result 2 and 1. As you can see on the above sample array, it should show 2 for menu ID 1 and 0 for menu ID 2.

Is there any way how to solve it?

Tags:

2

Answers


  1. 0

    I’m not sure about the error, but i just change the syntax, and try it in wamp, and it did print 2 and 0.

    <?php
$headerMenu = array(
    array(
        'menuID' => 1,
        'menuName' => 'AA',
        'menuURL' => '',
        'subMenu' => array(
            array(
                'subMenuID' => 1,
                'subMenuName' => 'Sub 1',
                'subMenuURL' => 'ab'
            ),
            array(
                'subMenuID' => 2,
                'subMenuName' => 'Sub 2',
                'subMenuURL' => 'ac'
            )
        )
    ),
    array(
        'menuID' => 2,
        'menuName' => 'AB',
        'menuURL' => '',
        'subMenu' => array()
    )
);

foreach ($headerMenu as $list) {
    echo "<pre>";
    print_r(count($list['subMenu']));
}
?>
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  2. 0

    better to use the is_array() and check if subMenu is an array or not before counting it!

    foreach ($headerMenu as $list) {
    //print_r($list['menuName']);

    echo "<pre>";
    if (is_array($list['subMenu'])) {
        print_r(count($list['subMenu']));
    } else {
        print_r(0);
    }
}
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