Cannot unset readonly property %s::$%s

Description

Once a readonly property has been set, it cannot be unset. That would defeat the whoe purpose of readonly.

Example

<?php

class X {
    public readonly $property;

    function __construct($a) {
        $this->property = $a;
        unset($this->property);
    }
}

?>

Literal Examples

• Cannot unset readonly property X::$property

Solutions

• Use clone to create a new object, and have a chance to change that value.

• Remove the unset call.

• Remove the readonly property.