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PHP Manual

This manual is provided as a courtesy. It is not an official source. Please check php.net for updated information.

PHP Manual

PHP Manual
PHP Manual
PrevChapter 21. References ExplainedNext

Unsetting References

When you unset the reference, you just break the binding between variable name and variable content. This does not mean that variable content will be destroyed. For example:

<?php
$a = 1;
$b =& $a;
unset($a);
?>

won't unset $b, just $a.

Again, it might be useful to think about this as analogous to Unix unlink call.

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