Invalid argument supplied for foreach()

Question

It often happens to me to handle data that can be either an array or a null variable and to feed some foreach with these data.

$values = get_val         


        

Answer 1

I'll use a combination of empty, isset and is_array as

$array = ['dog', 'cat', 'lion'];

if (!empty($array) && isset($array) && is_array($array) {
    //loop
    foreach ($array as $values) {
        echo $values; 
    }
}