Recent PHP distribution statistics show that outdated PHP code is often not updated. Many users apparently shy away from the migration effort and are afraid of technical problems when switching over. A lack of time is another common reason for why many webmasters postpone overdue updates or major version upgrades. Once you’ve lost your connection, however, the effort required to install updates can increase significantly. Basically, the further the gap between two PHP versions, the greater your adaptation efforts will be. In addition, when changing to a new major release, e.g. from version 7 to version 8, additional maintenance work is to be expected.
However, if you don’t keep your system up to date, you should be prepared to deal with the consequences. Technical problems can accumulate, since your database information will no longer be up to date. As a result, the performance of your website will suffer, and this will make it stand out like a sore thumb in comparison to competing offers due to its extended loading times. Ultimately, this can lead to declining visitor numbers.
Outdated PHP code has a particularly negative impact on the safety of web offers. Hackers are always on the lookout for security gaps that are not closed. If you wait very long with PHP updates, these vulnerabilities will undoubtedly accumulate. In effect, you can assume that bugs and security gaps in the PHP versions up to version 7.3.8 will pave the way for arbitrary code execution,third-party programs to be installed, data to be changed, or even data to be deleted.
That’s why you should take updating your web offers seriously, and update to the latest supported version as soon as possible. In light of the PHP 7.2 EOL date, switching to the current version is certainly recommended. PHP 7.4, for example, operates without any compatibility problems with established and popular content management systems such as WordPress, Joomla, or Drupal. Besides the more recent 7 versions, PHP 8 is set to be released shortly for a major update.
Updates are usually associated with additional work and may require technical problems to be solved, as well as finding new solutions and replacing outdated plug-ins. In the long term, however, you’ll benefit from the new features and the performance and security optimisations of the successor versions. However, before going online with updated PHP code, you should carry out tests in a secure offline environment. Any errors and problems incurred can then be solved before the website is accessible to others. If you need additional support, you can contact the plugin manufacturers or reach out to the PHP community.