Paste_Image.png

<?php

class NbaPlayer
{
    public $name;

    function __clone()
    {
        $this->name = 'TBD';
    }
}

$james = new NbaPlayer();
$james->name = 'james';
echo $james->name . "<br/>";//james
$james2 = clone $james;
echo "before set up :james2   " . $james2->name . "<br/>";//before set up :james2 TBD
$james2->name = 'james2';
echo 'james :  ' . $james->name . "<br/>";//james : james
echo 'james2 ： ' . $james2->name . "<br/>";//james2 ： james2
?>

Paste_Image.png