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How to Change PHP Settings in CyberPanel: Upload Size, Memory Limit and php.ini - JAY - 10-24-2026 How to Change PHP Settings in CyberPanel: Upload Size, Memory Limit and php.ini "The uploaded file exceeds the upload_max_filesize directive", "Allowed memory size exhausted", a backup import that times out: these are all PHP limits, and in CyberPanel you change them per PHP version. Step 1: Know your site's PHP version Settings belong to a PHP version, not to a website. If your site runs PHP 8.3, edit PHP 8.3. You can see and change a site's version under Websites. Step 2: Change the basic settings Open Server > PHP Configs. The Basic Settings tab covers the values people change most: Select the PHP Version. On a fresh install the defaults are small: memory_limit 128M, max_execution_time 30, upload_max_filesize 2M, post_max_size 8M and max_input_time 60. That 2 MB upload limit is why so many first uploads fail. Adjust: upload_max_filesize: the biggest single file you can upload. For WordPress media and plugin uploads, Code:Copy 64M or Code:Copy 128M is plenty. post_max_size: the whole form submission. Keep it equal to or bigger than upload_max_filesize, or big uploads still fail. memory_limit: memory one PHP script may use. Code:Copy 256M suits most WordPress sites; page builders and WooCommerce may want Code:Copy 512M . max_execution_time and max_input_time (seconds): raise to Code:Copy 300 for big imports. Don't leave huge values on a busy server. display_errors: keep Off on live sites, or visitors see paths and errors. file_uploads On, allow_url_fopen usually On, allow_url_include always Off (it's a security risk). Click Save Changes, then Restart PHP. Without the restart, nothing changes. Step 3: The full php.ini (Advanced Editor) The Advanced Editor tab opens the complete php.ini for the selected version, for settings that aren't on the basic tab (for example Code:Copy max_input_vars , which page builders and big menus often need at Code:Copy 5000 ). Edit, Save Changes, Restart PHP. The same file on disk, for PHP 8.3 on Ubuntu: Code:Copy /usr/local/lsws/lsphp83/etc/php/8.3/litespeed/php.ini After editing by hand: Code:Copy systemctl restart lsws . Step 4: Check the new value Code:Copy /usr/local/lsws/lsphp83/bin/php -i | grep -E 'upload_max_filesize|post_max_size|memory_limit' For what the website really sees, check WordPress Tools > Site Health > Info > Server, or a temporary phpinfo file (delete it afterwards). Still limited after changing it? Wrong PHP version edited: check the site's version again. PHP not restarted: click Restart PHP or restart lsws. A .htaccess or .user.ini override in the site folder sets a lower value. Search for it: Code:Copy grep -ri 'upload_max\|memory_limit' /home/example.com/public_html/.htaccess /home/example.com/public_html/.user.ini 2>/dev/null WordPress' own limit: Code:Copy WP_MEMORY_LIMIT in wp-config.php can be lower than PHP's memory_limit. Upload still fails above ~100 MB behind Cloudflare: Cloudflare's free plan limits request size to 100 MB. Missing an extension rather than a limit? See how to install PHP extensions in CyberPanel. More CyberPanel guides Fail2ban brute-force protection Change PHP version per website Git deployment from GitHub SSH key login, passwords off Create a website Issue SSL and fix failed certificates Subdomains, addon domains and aliases Rewrite rules, force HTTPS, HSTS Install WordPress with LiteSpeed Cache Cron jobs and a real WP-Cron Redis object cache for WordPress Databases and phpMyAdmin Email, DKIM, SPF and DMARC Email forwarding, catch-all, plus-addressing Mail queue, spam senders, blacklists CyberPanel DNS vs Cloudflare Packages and website limits Deploy Laravel on CyberPanel WordPress staging (clone) fixes Backups: create, restore, schedule File Manager and FTP Reset the admin password from SSH Log files and config locations Check and restart services First steps after install ModSecurity + OWASP rules (fix) CLI cheat sheet Install CyberPanel on Ubuntu 24.04 Firewall explained Install PHP extensions Update CyberPanel safely Server Error (500) after a fresh install Packages, users and ACLs Upgrade CyberPanel safely Real visitor IPs behind Cloudflare Docker apps on your domain with SSL Import a large SQL file over SSH Remote MySQL access for one IP Move WordPress to CyberPanel by hand Fix "Error establishing a database connection" Fix PHP2Shell (CVE-2026-109618/109619) Run your own nameservers (PowerDNS) CyberPanel on a small VPS: RAM tuning Tested on CyberPanel 3.0 (build 8, OpenLiteSpeed edition) on Ubuntu 24.04, October 2026. Menu names can change slightly between versions.