How To Update PHP Version in WordPress
WordPress relies heavily on PHP. Most of the core files and almost all themes in WordPress are PHP based. PHP is so widely used over the internet today that even the blog you are reading is powered by PHP. Having the latest version of PHP on your website can give you a significant edge over the people who run outdated versions. There are many reasons why you should update to the latest version of PHP. In this blog, we will explain why and how to update your WordPress site to the latest version of PHP.
Contents of This Guide
Why You Should Update to Latest PHP Version
The current latest version of PHP is 7.3. Once you update your website to PHP 7.3 you will find that it is more speedy as compared to your previous version. When compared with PHP 5.6, PHP 7 is known to enhance site performance by more than fifty percent. Moreover, PHP 7 uses lesser memory and many fatal errors of the previous version have been taken care of in this version.
The latest PHP version contains bug fixes and added security features. Therefore, updating your site to the latest PHP version gives you an additional element of security from hackers at no extra cost.
Windows 64-bit Support
PHP 7 has added consistent support for Windows 64 bit systems. Therefore, if you are a windows person, the update is just meant for you.
Once you update to latest PHP version, the increase in your website performance would mean that search engines would rank your website higher. Moreover, it will also decrease the bounce rate as users will not leave the site due to the slow rendering of the content.
How to Update PHP Version
Before you update the PHP version there are some prerequisites you need to follow,
The first step would be to backup your site to revert the changes in case any compatibility or other issues arise with the latest PHP version. In WordPress, this can be done by using several plugins. However, in this article, we shall use the WordPress plugin called UpdraftPlus which has more than 2 million active installations. To use this plugin:
- Firstly install and activate the UpdraftPlus plugin.
- Navigate to Dashboard>Settings>UpdraftPlus Backups.
- Here, click on the “Backup Now” button as shown in the image.
- Now it will present you with a tab to include both database and files. Include both the checkboxes as shown in the image below. The backup will take some time depending on your files and when it is complete, it can be checked under the “Existing Backups” option.
- Navigate to Dashboard>Settings>UpdraftPlus Backups>Existing Backups. Here you will find your backup along with the time stamp. Click on the Database, Plugins, Themes, and Uploads buttons one by one to download them in a folder on your local computer. Once completed, this folder will contain the entire backup of your WordPress site.
Checking For Compatibility Issues
It is a wise thing to check your WordPress site for any compatibility issues before making the final upgrade to PHP 7. For such a scenario, the Staging site comes in handy as it allows you to make a clone of your live website. Many solutions can help you in the staging of your site, but for this article, we shall use Local by Flywheel. This solution will help you test your website in a local environment. To do so:
- Download and install the Local by Flywheel on your computer like any regular software.
- Open the application and click on the plus sign in the lower left-hand corner to add a new local website. Thereafter, it will ask you for the options Name and Environment. In the Environment option, Click on Custom as shown in the image.
- Now in the Custom options, you will have the choice to select PHP 7 as the preferred choice. Thereafter create the admin name and password and wait while the app creates the staging area. Once it is ready, it can be found under the list of Local Sites option of the Flywheel’s app. Click on the Admin button to access the Dashboard as shown in the image.
- Now, install the UpdraftPlus plugin on this local site to upload your backup here. When it’s done, navigate to Dashboard>Settings>UpdraftPlus Backups. Here click on the option Upload backup files.
- Finally, drag and drop your four backup files to the area shown in the image. When it is complete, click on the Restore button to finish cloning your site.
Finding Compatibility Issues
Now browse through your site to see any compatibility issues. Some of the things to look out for are:
- Look at every page of your WordPress site to see if any of the element is not functioning properly.
- Check the functionality of plugins.
- Test the functionality of themes.
All this will take time depending on how big your website is. If you encounter any plugin or theme etc broken during your inspection, look for a replacement as WordPress offers many alternatives.
Updating the PHP Version
The PHP version is primarily updated on the server level and not from WordPress directly. Therefore, it leads us to two scenarios: Either you use a VPS or other hosting option which allows you complete control over the server or your hosting option doesn’t give you complete access over the server.
- Case 1: Here is a complete list of hosting providers that allows you to update PHP by yourself. This list also contains the complete process to do so. Moreover, if you have access to the command line, you can also update it yourself using this article.
- Case 2: If your hosting provider is not given in the above-mentioned list and you do not have complete access over the server, request your hosting provider to update your PHP version. This can be done by writing an email to your Hosting provider requesting them to update the PHP version.
Make sure to check for any compatibility issues before updating. However, in case you still encounter any problems after updating, roll back the changes to previous PHP versions or contact your Hosting provides or seek the help of a professional developer. In the worst-case scenario, if your host does not allow updating to the latest PHP version, it is time that you found a new host.
Update to PHP 7 today to avoid any security complications. This will also mean enhanced performance for your website. Besides the PHP version, there are several 0ther WordPress security measures that you need to take care of. We have compiled this extensive WordPress security guide which can help you immensely in ensuring the best security practices for your WordPress.
Still got any questions? Comment below.