Twins

<?php

class Baby {
    private $height = 5.9;
   
    public function __construct() {
    }
   
    public function __toString() {
        return strval($this->height);
    }
   
    public function __clone() {
        // mutation!
        $this->height = 4.5;
    }
}

echo $Julius = new Baby();

echo $Vincent = clone $Julius;

?>
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