Attempt to unset static property X::$x¶

Description¶

It is not possible to unset a static property.nThis applies to typed and not typed static properties. It also only applies to static properties that are already set, such as in the illustration: PHP complains about uninitialized state first, and later, about removing static properties.nThis does not apply to properties, which may be removed.

Example¶

<?php

class x {
    public static $y = 1;
    public static int $z;
}

//Attempt to unset static property A::$x
unset(x::$y);

//Attempt to unset static property x::$z
unset(x::$z);
x::$z = 2;
//Attempt to unset static property A::$x
unset(x::$z);


?>

Solutions¶

Set the property to null.
Set the property to a value that represents removal.