WordPress PHP Version Update Guide
Safely upgrade your PHP version for better performance and security.
Updating PHP is crucial for WordPress performance and security. Newer versions are faster and more secure.
Why Update PHP?
- Performance: PHP 8.1 is 2-3x faster than PHP 7.0
- Security: Old PHP versions have security vulnerabilities
- Compatibility: New WordPress features require modern PHP
- Support: Old PHP versions no longer receive updates
| PHP Version | Status | Performance |
|---|---|---|
| 7.0-7.2 | End of Life | Slow |
| 7.3-7.4 | Security Only | Moderate |
| 8.0 | Security Only | Fast |
| 8.1+ | Active Support | Fastest |
Before Updating PHP
1. Check Current PHP Version
In WordPress: Go to Tools → Site Health → Info → Server
2. Verify Compatibility
Use "PHP Compatibility Checker" plugin:
- Install plugin
- Select PHP version you want to upgrade to
- Run scan
- Review incompatible plugins/themes
3. Create Backup
Backup your entire site before updating PHP!
4. Test in Staging
Create a staging site and test PHP update there first.
How to Update PHP (Taiwan Web Hosting)
- Log into cPanel
- Find "Select PHP Version" or "MultiPHP Manager"
- Select your domain
- Choose PHP 8.1 or 8.2
- Click "Apply"
- Test your website thoroughly
Troubleshooting PHP Update Issues
White Screen After Update
- Revert to previous PHP version in cPanel
- Check error logs
- Update/replace incompatible plugins
Plugin Errors
- Update all plugins to latest versions
- Contact plugin authors for compatibility
- Find alternative plugins if needed
Taiwan Web Hosting PHP Support
Need help updating PHP? Taiwan Web Hosting provides free PHP update assistance. Contact support for help.
Modern PHP Hosting
Taiwan Web Hosting supports latest PHP versions (7.4, 8.0, 8.1, 8.2).