How to create a copy of an object in PHP?

Within PHP 5+ objects tend to be passed by reference. In PHP 4 there're passed by value (that's the reason it had runtime pass by reference, which became deprecated).

You can use the 'clone' operator inside PHP5 to copy physical objects:

<?php
//our original object is $objectA

$objectB = clone $objectA;

?>

Also, it's just objects which are passed by reference, definitely not everything.

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