Title: Any compatibility issues with PHP Version 4.4.9 with host 1&1? Last modified: August 19, 2016 --- # Any compatibility issues with PHP Version 4.4.9 with host 1&1? * [snowman247](https://wordpress.org/support/users/snowman247/) * (@snowman247) * [17 years, 5 months ago](https://wordpress.org/support/topic/any-compatibility-issues-with-php-version-449/) * I am planning to upgrade to WP 2.7. * My hosting package (1&1) uses PHP Version 4.4.9. * Any known problems with WP 2.7 and PHP v.4.4.9, that might affect upgrading? * Thanks Viewing 2 replies - 1 through 2 (of 2 total) * [satoridork](https://wordpress.org/support/users/satoridork/) * (@satoridork) * [17 years, 4 months ago](https://wordpress.org/support/topic/any-compatibility-issues-with-php-version-449/#post-936454) * [This post](http://codex.wordpress.org/Core_Update_Host_Compatibility) deals with the Core Upgrade Host Compatibility issues. 1 & 1 is mentioned near the bottom of the page in the Works with caveats section. Their version of PHP (4.4.9) is causing problems for me, with WordPress database errors [MySQL server has gone away] * [mojorob](https://wordpress.org/support/users/mojorob/) * (@mojorob) * [17 years, 4 months ago](https://wordpress.org/support/topic/any-compatibility-issues-with-php-version-449/#post-936455) * Can someone confirm if the compatibility issues with 1&1 is with 1and1.co.uk ( UK based) or 1and1.com (US based) or both? * The page [referred to above](http://codex.wordpress.org/Core_Update_Host_Compatibility) does not state which it is. Viewing 2 replies - 1 through 2 (of 2 total) The topic ‘Any compatibility issues with PHP Version 4.4.9 with host 1&1?’ is closed to new replies. ## Tags * [upgrade](https://wordpress.org/support/topic-tag/upgrade/) * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) * 2 replies * 3 participants * Last reply from: [mojorob](https://wordpress.org/support/users/mojorob/) * Last activity: [17 years, 4 months ago](https://wordpress.org/support/topic/any-compatibility-issues-with-php-version-449/#post-936455) * Status: not resolved ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics