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Frequently Asked Questions

What PHP version should I use for my website or application?

Use the newest PHP version that is fully supported by your website software, framework, theme, plugins, and custom code. Newer versions generally provide improved performance and security, but older applications may require a specific release. You can assign compatible versions to individual domains through cPanel MultiPHP Manager without changing every hosted website.

Can different websites on one hosting account use different PHP versions?

Yes. When supported by the hosting environment, each domain or subdomain can use a separate PHP version. This is helpful when one application requires a newer release while a legacy website still depends on an older version. Test each change carefully because incompatible functions, extensions, themes, or plugins can cause errors after switching versions.

Which PHP settings can I change in cPanel?

You may be able to adjust settings such as memory limits, upload size, execution time, input variables, error reporting, and other PHP directives. Available values depend on the hosting configuration and server limits. The MultiPHP INI Editor guide explains how to modify supported directives without manually editing server-wide configuration files.

Why does my PHP website show a 500 Internal Server Error?

A 500 error can result from invalid PHP code, incompatible software, incorrect file permissions, unsupported directives, exhausted resource limits, or a damaged .htaccess file. Review recent changes first, then check the server error log for the exact cause. The cPanel Errors tool can help identify failing scripts and configuration problems.

How do I connect a PHP application to a MySQL database?

Create a database and database user, assign the required privileges, and enter the database name, username, password, and server hostname in the application configuration. Use secure credentials and avoid placing database passwords in publicly accessible files. Database tables and queries can be reviewed through phpMyAdmin hosting tools.

Can PHP scripts run automatically on a schedule?

Yes. Cron jobs can run PHP scripts automatically at selected intervals for backups, report generation, email queues, data imports, cleanup tasks, and application maintenance. Use the correct PHP executable and full script path, and avoid scheduling resource-intensive jobs too frequently. The cPanel Cron Jobs guide explains how recurring commands are configured.

Is PHP hosting suitable for frameworks such as Laravel or CakePHP?

PHP hosting can support many frameworks when the required PHP version, extensions, database engine, document root, command-line tools, and file permissions are available. Review the framework’s current server requirements before deployment. Composer-based projects and command-line maintenance may also require SSH access, which is described in the SSH access guide.

How can I improve the performance of a PHP website?

Keep PHP and application software current, enable compatible caching, optimize database queries, compress images, reduce unnecessary plugins, and avoid loading large scripts on every request. Review error logs and resource usage to identify slow processes. The Optimize Website tool can also enable supported content compression for faster delivery.

What should I back up before updating a PHP application?

Back up the complete website files, databases, configuration files, uploaded content, email-dependent settings, and any custom code before making major changes. Confirm that the backup can be downloaded or restored, and test important updates in a separate copy when possible. This provides a recovery path if a PHP version change, extension update, or application upgrade causes compatibility problems.

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