Title: Undefined array key “timeout” Last modified: July 29, 2022 --- # Undefined array key “timeout” * Resolved [Michael](https://wordpress.org/support/users/michaelwp85/) * (@michaelwp85) * [3 years, 8 months ago](https://wordpress.org/support/topic/undefined-array-key-timeout/) * W3TC version **2.2.3** throws warnings. * ``` Warning: Undefined array key "timeout" in ....plugins/w3-total-cache/Cache_Redis.php on line 99 Warning: Undefined array key "retry_interval" in ...plugins/w3-total-cache/Cache_Redis.php on line 100 Warning: Undefined array key "read_timeout" in ...plugins/w3-total-cache/Cache_Redis.php on line 101 ``` * **How to reproduce:** Use redis to cache the W3TC config. Set W3TC_CONFIG_CACHE_ENGINE to redis. * **Root cause:** Cache_Redis.php 99-101: * ``` $this->_timeout = $config['timeout']; $this->_retry_interval = $config['retry_interval']; $this->_read_timeout = $config['read_timeout']; ``` * The config that is returned in ConfigCache 74: * ``` $engineConfig = array( 'servers' => explode( ',', W3TC_CONFIG_CACHE_REDIS_SERVERS ), 'persistent' => ( defined( 'W3TC_CONFIG_CACHE_REDIS_PERSISTENT' ) ? W3TC_CONFIG_CACHE_REDIS_PERSISTENT : true ), 'dbid' => ( defined( 'W3TC_CONFIG_CACHE_REDIS_DBID' ) ? W3TC_CONFIG_CACHE_REDIS_DBID : 0 ), 'password' => ( defined( 'W3TC_CONFIG_CACHE_REDIS_PASSWORD' ) ? W3TC_CONFIG_CACHE_REDIS_PASSWORD : '' ), 'key_version_mode' => 'disabled' ); ``` * The returned config is missing the keys that are expected. * The issue was introduced in version 2.2.2. Downgrading to 2.2.1 removes the warnings. * Additionally, there are multiple deprecation notices: `Deprecated: Redis::pconnect(): Passing null to parameter #3 ($timeout) of type float is deprecated in ...plugins/ w3-total-cache/Cache_Redis.php on line 506` - This topic was modified 3 years, 8 months ago by [Michael](https://wordpress.org/support/users/michaelwp85/). Viewing 13 replies - 1 through 13 (of 13 total) * Plugin Contributor [Marko Vasiljevic](https://wordpress.org/support/users/vmarko/) * (@vmarko) * [3 years, 8 months ago](https://wordpress.org/support/topic/undefined-array-key-timeout/#post-15871478) * Hello [@michaelwp85](https://wordpress.org/support/users/michaelwp85/) * Thank you for reaching out and I m happy to assist you with this. I’ve tried to replicate the problem, however, Redis works as expected with the PHP Redis installed. Have you made any changes in the db-config.php? What is the PHP version you are using? Thanks! * Thread Starter [Michael](https://wordpress.org/support/users/michaelwp85/) * (@michaelwp85) * [3 years, 8 months ago](https://wordpress.org/support/topic/undefined-array-key-timeout/#post-15871594) * Hi [@vmarko](https://wordpress.org/support/users/vmarko/), * No changes are made to the db-config.php, this file is in my git ignore and I always let w3 be responsible for creating it. * I’m currently running PHP 8.1, but we also have loads of production sites running 8 with the same issue. And I’ve just tested 7.4 same issues. * To be clear it’s not just using PHP Redis, it’s storing the W3TC config in Redis using the constants. Following the stack trace and looking at the code I shared this will always throw these warnings since the array keys are never filled in ConfigCache.php on line 74. * Kind regards, Michael * Plugin Contributor [Marko Vasiljevic](https://wordpress.org/support/users/vmarko/) * (@vmarko) * [3 years, 8 months ago](https://wordpress.org/support/topic/undefined-array-key-timeout/#post-15871658) * Hello [@michaelwp85](https://wordpress.org/support/users/michaelwp85/) * Thank you for your feedback. Let me get back to you once we investigate this and Have more information. Thanks! * Thread Starter [Michael](https://wordpress.org/support/users/michaelwp85/) * (@michaelwp85) * [3 years, 8 months ago](https://wordpress.org/support/topic/undefined-array-key-timeout/#post-15876459) * Thanks, [@vmarko](https://wordpress.org/support/users/vmarko/). If you need more input or a git repo to be able to reproduce the issue please let me know. * P.S. I don’t think the warnings are breaking anything at the moment but it’s not possible to configure certain settings and it is flooding logs and CLI output. * Plugin Contributor [Marko Vasiljevic](https://wordpress.org/support/users/vmarko/) * (@vmarko) * [3 years, 8 months ago](https://wordpress.org/support/topic/undefined-array-key-timeout/#post-15876911) * Hello [@michaelwp85](https://wordpress.org/support/users/michaelwp85/) * Thank you for your patience. 1. The settings fields for Redis should be checked to ensure that they can’t be saved as blank 2. The 0 defaults should be checked to ensure that they are being interpreted as int 0 3. Try adding the lines below in ConfigCache.php lines 86+ See below: * ``` case 'redis': $engineConfig = array( 'servers' => explode( ',', W3TC_CONFIG_CACHE_REDIS_SERVERS ), 'persistent' => ( defined( 'W3TC_CONFIG_CACHE_REDIS_PERSISTENT' ) ? W3TC_CONFIG_CACHE_REDIS_PERSISTENT : true ), 'dbid' => ( defined( 'W3TC_CONFIG_CACHE_REDIS_DBID' ) ? W3TC_CONFIG_CACHE_REDIS_DBID : 0 ), 'password' => ( defined( 'W3TC_CONFIG_CACHE_REDIS_PASSWORD' ) ? W3TC_CONFIG_CACHE_REDIS_PASSWORD : '' ), 'key_version_mode' => 'disabled', 'timeout' => 0, 'retry_interval' => 0, 'read_timeout' => 0, ); break; ``` * To clarify add the lines: * ``` 'timeout' => 0, 'retry_interval' => 0, 'read_timeout' => 0, ``` * Just after the line: * `'key_version_mode' => 'disabled'` * Let me know if this helps! * Thanks! * Thread Starter [Michael](https://wordpress.org/support/users/michaelwp85/) * (@michaelwp85) * [3 years, 8 months ago](https://wordpress.org/support/topic/undefined-array-key-timeout/#post-15876981) * [@vmarko](https://wordpress.org/support/users/vmarko/) thanks for your reply but this is not my code, this is the W3TC plugin code. This is a bug in the plugin not in my codebase. That’s why I’m posting here. * [https://plugins.trac.wordpress.org/browser/w3-total-cache/trunk/ConfigCache.php#L73](https://plugins.trac.wordpress.org/browser/w3-total-cache/trunk/ConfigCache.php#L73) * This config (`$engineConfig`) is passed to the following constructor: [https://plugins.trac.wordpress.org/browser/w3-total-cache/trunk/Cache_Redis.php#L91](https://plugins.trac.wordpress.org/browser/w3-total-cache/trunk/Cache_Redis.php#L91) * Plugin Contributor [Marko Vasiljevic](https://wordpress.org/support/users/vmarko/) * (@vmarko) * [3 years, 8 months ago](https://wordpress.org/support/topic/undefined-array-key-timeout/#post-15877544) * Hello [@michaelwp85](https://wordpress.org/support/users/michaelwp85/) * Thank you for your feedback. I understand this, and this why I asked you to add those lines to /wp-content/plugins/w3-total-cache/ConfigCache.php So can you please add the following to the mentioned file * ``` 'timeout' => 0, 'retry_interval' => 0, 'read_timeout' => 0, ``` * Just after the line `'key_version_mode' => 'disabled'` and see if the problem persists. Thanks! * Thread Starter [Michael](https://wordpress.org/support/users/michaelwp85/) * (@michaelwp85) * [3 years, 8 months ago](https://wordpress.org/support/topic/undefined-array-key-timeout/#post-15877624) * Hi [@vmarko](https://wordpress.org/support/users/vmarko/), * Sorry, I thought you suggested a fix instead of requesting me to check if this would resolve the problem. Looking at the code I already knew this would fix it. But I double-checked and can confirm this resolves the issues. Adding the configuration values will remove the warnings. * The better fix would be to retrieve these values from the stored config instead of hardcoding values to 0. * Plugin Contributor [Marko Vasiljevic](https://wordpress.org/support/users/vmarko/) * (@vmarko) * [3 years, 8 months ago](https://wordpress.org/support/topic/undefined-array-key-timeout/#post-15877746) * Hello [@michaelwp85](https://wordpress.org/support/users/michaelwp85/) * Thank you for your feedback. Thank you for your confirmation. Let me bring this to the team for more testing and I’ll get back to you. Thanks! * Thread Starter [Michael](https://wordpress.org/support/users/michaelwp85/) * (@michaelwp85) * [3 years, 8 months ago](https://wordpress.org/support/topic/undefined-array-key-timeout/#post-15877787) * [@vmarko](https://wordpress.org/support/users/vmarko/) Thanks! * Quick question for any future issues if they may arise, would it be better to create a ticket on GitHub or report it here? I could try to provide a PR on GitHub to resolve the issue. * Plugin Contributor [Marko Vasiljevic](https://wordpress.org/support/users/vmarko/) * (@vmarko) * [3 years, 8 months ago](https://wordpress.org/support/topic/undefined-array-key-timeout/#post-15878314) * Hello [@michaelwp85](https://wordpress.org/support/users/michaelwp85/) * The Github repo should be used for the PR, and confirmed bugs so feel free to create a pull request which will be reviewed by the devs. * Thanks! * Thread Starter [Michael](https://wordpress.org/support/users/michaelwp85/) * (@michaelwp85) * [3 years, 8 months ago](https://wordpress.org/support/topic/undefined-array-key-timeout/#post-15880218) * PR has been created here: [https://github.com/W3EDGE/w3-total-cache/pull/542](https://github.com/W3EDGE/w3-total-cache/pull/542) * Plugin Author [Joe Cartonia](https://wordpress.org/support/users/joemoto/) * (@joemoto) * [3 years, 8 months ago](https://wordpress.org/support/topic/undefined-array-key-timeout/#post-15881311) * [@michaelwp85](https://wordpress.org/support/users/michaelwp85/) Thank you for your contribution. We’ll include this fix in the next patch release (2.2.4). Viewing 13 replies - 1 through 13 (of 13 total) The topic ‘Undefined array key “timeout”’ is closed to new replies. * ![](https://ps.w.org/w3-total-cache/assets/icon-256x256.png?rev=1041806) * [W3 Total Cache](https://wordpress.org/plugins/w3-total-cache/) * [Frequently Asked Questions](https://wordpress.org/plugins/w3-total-cache/#faq) * [Support Threads](https://wordpress.org/support/plugin/w3-total-cache/) * [Active Topics](https://wordpress.org/support/plugin/w3-total-cache/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/w3-total-cache/unresolved/) * [Reviews](https://wordpress.org/support/plugin/w3-total-cache/reviews/) * 13 replies * 3 participants * Last reply from: [Joe Cartonia](https://wordpress.org/support/users/joemoto/) * Last activity: [3 years, 8 months ago](https://wordpress.org/support/topic/undefined-array-key-timeout/#post-15881311) * Status: resolved