Description:
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When update from php 7.3 alpha 3 to php7.3 snapshot (Revision: r6c61f15 (July 10 2018, 03:00:20)), phpmyadmin shows various errors.

Warning in .\libraries\classes\Config\FormDisplay.php#658
 "continue" targeting switch is equivalent to "break". Did you mean to use "continue 2"?

Backtrace

.\vendor\composer\ClassLoader.php#444: include()
.\vendor\composer\ClassLoader.php#322: Composer\Autoload\includeFile(string 'C:\\xampp\\phpMyAdmin\\vendor\\composer/../../libraries/classes\\Config\\FormDisplay.php')
Composer\Autoload\ClassLoader->loadClass(string 'PhpMyAdmin\\Config\\FormDisplay')
.\libraries\classes\Config\Forms\BaseForm.php#16: spl_autoload_call(string 'PhpMyAdmin\\Config\\FormDisplay')
.\vendor\composer\ClassLoader.php#444: include(.\libraries\classes\Config\Forms\BaseForm.php)
.\vendor\composer\ClassLoader.php#322: Composer\Autoload\includeFile(string 'C:\\xampp\\phpMyAdmin\\vendor\\composer/../../libraries/classes\\Config\\Forms\\BaseForm.php')
Composer\Autoload\ClassLoader->loadClass(string 'PhpMyAdmin\\Config\\Forms\\BaseForm')
.\libraries\classes\Config\Forms\User\FeaturesForm.php#12: spl_autoload_call(string 'PhpMyAdmin\\Config\\Forms\\BaseForm')
.\vendor\composer\ClassLoader.php#444: include(.\libraries\classes\Config\Forms\User\FeaturesForm.php)
.\vendor\composer\ClassLoader.php#322: Composer\Autoload\includeFile(string 'C:\\xampp\\phpMyAdmin\\vendor\\composer/../../libraries/classes\\Config\\Forms\\User\\FeaturesForm.php')
Composer\Autoload\ClassLoader->loadClass(string 'PhpMyAdmin\\Config\\Forms\\User\\FeaturesForm')
.\libraries\classes\Config\Forms\BaseFormList.php#123: spl_autoload_call(string 'PhpMyAdmin\\Config\\Forms\\User\\FeaturesForm')
.\libraries\classes\UserPreferences.php#181: PhpMyAdmin\Config\Forms\BaseFormList::getFields()
.\libraries\classes\Config.php#885: PhpMyAdmin\UserPreferences->apply(array)
.\libraries\common.inc.php#453: PhpMyAdmin\Config->loadUserPreferences()
.\index.php#26: require_once(.\libraries\common.inc.php)

I reported this error to PhpMyAdmin, but my version of php is a snapshot.
Question: Problem is with PHP or PhpMyAdmin??