note 126161 added to language.references.unset

it's my way to remember. <?php // the var $a is point to the value 1, as a line connect to value 1 $a = 1; // the var $b point to the value which the var $a point to, as a new line connect to value 1 $b =& $a; // cut the line of the var $a to value 1,now $a is freedom,it's nothing point to. so the value of $a is null unset($a); ?> $a--------> 1 ↑ | | $b ---- Server IP: 45.112.84.4 Probable Submitter: 45.112.85.242 (proxied: 202.226.25.216) ---- Manual Page -- https://php.net/manual/en/language.references.unset.php Edit -- https://main.php.net/note/edit/126161 Del: integrated -- https://main.php.net/note/delete/126161/integrated Del: useless -- https://main.php.net/note/delete/126161/useless Del: bad code -- https://main.php.net/note/delete/126161/bad+code Del: spam -- https://main.php.net/note/delete/126161/spam Del: non-english -- https://main.php.net/note/delete/126161/non-english Del: in docs -- https://main.php.net/note/delete/126161/in+docs Del: other reasons-- https://main.php.net/note/delete/126161 Reject -- https://main.php.net/note/reject/126161 Search -- https://main.php.net/manage/user-notes.php