After upgrading PHP, some older WordPress plugin versions can trigger parse errors. One example is an error involving unexpected 'print' (T_PRINT) when Contact Form 7 or related files are outdated.
Example path
wp-content/plugins/contact-form-7/admin/includes/welcome-panel.php
Typical problematic method
public function _print()
PHP version changes can expose compatibility issues in old plugin code.
Recommended fix
Update Contact Form 7 and all related plugins to versions compatible with your PHP release. If the admin area is broken, temporarily rename the plugin folder through SFTP, log in, update the plugin and then reactivate it.
Production checklist
Before changing PHP versions, take a full backup, verify plugin compatibility and test the upgrade on staging. PHP upgrades improve security and performance, but old plugins must be handled carefully.

