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PHP: unset - Manual
$unset - MongoDB Manual
Unset Definition & Meaning - Merriam-Webster
UNSET | definition in the Cambridge English Dictionary
PHP unset() Function - W3Schools
unset - CSS: Cascading Style Sheets | MDN - MDN Web Docs
PHP | unset() Function - GeeksforGeeks
PHP: Unsetting References - Manual
PHP unset() Function: A Comprehensive Guide - Web Developers …
PHP unset() function - w3resource