`CakeResponse` referencing undefined variables in `compact()` call triggers errors/notices

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I’m updating my first CakePHP application on a web server, but pages show errors which are at the end of this post. I can’t find the file(s) which have not uploded correctly. Thanks for help.

CakePHP version : 2.9

Error messages :

Notice (8): compact(): Undefined variable: etagMatches [CORE/Cake/Network/CakeResponse.php, line 1171]*

Notice (8): compact() [function.compact]: Undefined variable: timeMatches [CORE/Cake/Network/CakeResponse.php, line 1171]*

Notice (8): compact() [function.compact]: Undefined variable: subject [CORE/Cake/Utility/ObjectCollection.php, line 128]*

cakephp-2.9 cakephp-2.x cakephp php
1 Answers

As of PHP 7.3 compact() will trigger an error when referencing undefined variables.

This has been fixed in CakePHP 2.10.13, either upgrade your application (preferred), or downgrade your PHP version.

https://github.com/cakephp/cakephp/pull/12487

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