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if a $_SESSION['example'] variable has not been set before being used, PHP version 7.4 just returned false, PHP 8.0 throws a PHP Warning: Undefined array key "example"
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Server IP: 45.112.84.4
Probable Submitter: 80.90.5.137 (proxied: 2a01:cb1d:9683:dc00:41bb:8918:79bc:54a8)
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Manual Page -- https://php.net/manual/en/migration80.deprecated.php
Edit -- https://main.php.net/note/edit/130482
Del: integrated -- https://main.php.net/note/delete/130482/integrated
Del: useless -- https://main.php.net/note/delete/130482/useless
Del: bad code -- https://main.php.net/note/delete/130482/bad+code
Del: spam -- https://main.php.net/note/delete/130482/spam
Del: non-english -- https://main.php.net/note/delete/130482/non-english
Del: in docs -- https://main.php.net/note/delete/130482/in+docs
Del: other reasons-- https://main.php.net/note/delete/130482
Reject -- https://main.php.net/note/reject/130482
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