For cleaned or uninstalled php arrays, are garbage items collected?

Question

If I disconnect the array, will its elements be collected or freed from garbage if they are not mentioned anywhere? what if i just do $ array = new array ();

$ array = array ('a' => 1);
// method 1 to clear array
unset ($ array);

method 2 to clean the array

$ array = array ('a' => 1);
// method 2 to clear array
$ array y = array ();

Answer 1

Check out php <5.3 garbage collection, do I need to set the values ​​of the array null or set the array = null so that all strong elements remain? perhaps this will help answer your question.

Answer 2

:

        $a = array();
        $a[0] = 'a1';
        $a[1] = 'b2';

        foreach($a as $v)
            echo $v . '<br />';
        //writes content of array

        echo count($a) . '<br />';
        //writes 2

        $a = array(); //CLEAR ARRAY

        foreach($a as $v)
            echo $v . '<br />';
        //writes nothing

        echo count($a) . '<br />';
        //writes 0

Answer 3

The following will change the array itself and leave it empty:

array_splice($myArray, 0);

And splicing documentation