Change PHP version on web hosting

Change PHP version on web hosting

Anthony IT Solutions offers several PHP versions (8.1, 8.2, 8.3) on theweb hosting Mutualized. Choosing the right version guarantees CMS compatibility and security.

Change PHP by domain or folder from the panel, without impact on other account sites if multiple domains.

What you need

• Access panel
• Functional site to test
• Backup, guards
• Version required by known CMS

Available versions

Change from panel

1. Panel

   My Services → Manage → PHP or Version PHP.

2. Selector

   Choose 8.2 or 8.3 for a modern site.

3. Apply

   Propagation immediately at 2 min.

4. By folder

   Option .htaccess or MultiPHP if subfolder legacy.

Test after change

1. Front Office

   Public pages, forms.

2. Back-office

   Admin WP/Presta login.

3. Logs

   Logs if white page.

4. Rollback

   Return to previous version if fatal error.

PHP Extensions

1. Required CMS

   intl, mbstring, curl, gd, zip.

2. OPcache

   Enabled by default, performance.

3. Disabled

   exec, shell_exec often off on mutualized.

4. php.ini custom

   .user.ini for local memory_limit.

Compatibility applications

• WordPress, WordPress
• PrestaShop 8 → 8.2
• Obsolete plugins = risk 500
• Test staging first
• **Good practice**, see detailed procedures.

Troubleshooting

• 500 after change, Plugin incompatible; PHP rollback.
• Deprecated wars, MAJ theme/plugin.
• Version not listed, Format or Support request.
• CLI 的 web, Cron can use other binary.

Frequently Asked Questions

PHP by subdomain?
Yes if vhost separated or .user.ini.

memory_limit ?
256M via .user.ini or panel.

Compose?
SSH limited; Local dial + SFTP.

WordPress minimum ?
PHP 7.4 official min; 8.2+ recommended.

Related guides

• Error 500
• WordPress
• Logs
• Panel

See also our web hosting offer and all the procedures on wiki web hosting.