如何在多维关联数组中检索随机值？

Question

I have an array which contains information on posts I have made.

$DexArray = array(

            array(
            'url'       => "http://i.imgur.com/ObXLdd6C.jpg",
            'headline'  => "Dronningens Nytårstale",
            'subline'   => "Tallene bag talen og årets spilforslag",
            'href'      => "nytaarstale.php",
            'postedby'  => "kris",
            'postedurl' => "https://www.facebook.com/dataanalyticsdk",
            'dato'      => "21. december, 2014"
            ),

            array(
            'url'       => "http://i.imgur.com/sxddhOe.jpg",
            'headline'  => "Endless Jewelry",
            'subline'   => "Are there really endless possibilities?",
            'href'      => "endless.php",
            'postedby'  => "Nikolaj Thulstrup",
            'postedurl' => "kris",
            'dato'      => "10. december, 2014"
            ),

It is stored in a multidimensional associate array. I am trying to retrieve a random 'href' value in the array and store it as a variable.

I have tried using the array_rand function but it doesn't seem to work.

$k = array_rand($DexArray);
$v = $array[$k]['href'];

I get an error message saying: undefined variable: array in this line "$v = $array[$k]['href'];"

Do you have a solution for this?

Answer 1

It should be

$k = array_rand($DexArray);
$v = $DexArray[$k]['href'];