TSUMIRA JAPAN · PRACTICAL GUIDES
PHP and WordPress support guides
Find practical guides to PHP security, version checks, WordPress updates and error recovery, with official references and next steps.
Start with version checks, inconclusive results or update planning. Each guide explains what to collect and where to go next.
PHP2Shell explained: CVE-2026-109618 and CVE-2026-109619
A detailed defensive analysis of PHP request-state flaws, OOM, stale references, mod_php and FPM exposure, vendor fixes, mitigation limits and evidence of remediation.
Read the guide →PHP vulnerability remediation: Ubuntu, Debian, RHEL and Docker
A detailed administrator guide with commands for inventory, recovery planning, package updates, FPM and Apache restarts, Docker recreation and verification.
Read the guide →How to check PHP version in WordPress and hosting panels
Find the PHP actually serving your website. Compare hosting settings, WordPress Site Health and command-line PHP without exposing server information.
Read the guide →WordPress PHP update checklist: backups, compatibility and testing
Plan a WordPress PHP update with recoverable backups, theme and plugin checks, controlled staging and customer-journey tests.
Read the guide →Check hosting PHP: Xserver, Sakura, ConoHa WING and Lolipop
Official PHP settings guides for Japanese hosting services, plus a supplier enquiry template to confirm patch status and required action.
Read the guide →Why an external PHP check can be inconclusive
Understand hidden versions, CDN responses and access restrictions, then continue with a manual review without weakening your site configuration.
Read the guide →500 errors or a blank page after a PHP update: what to check
Record the change, inspect private logs and plan recovery for WordPress or PHP failures without exposing diagnostics or losing new business data.
Read the guide →PHP update support: scope, estimates and handover
Get help with WordPress or custom PHP when you need a developer. Understand the information required, cost factors and division of responsibilities.
Read the guide →PHP end of life and vendor backports explained
Distinguish upstream support from vendor maintenance, verify package fixes and plan migration before your support window closes.
Read the guide →You can contact us even when a public check is inconclusive.
Start the free PHP check →