exam support valid multiple

nexus/Install/update/update.php

@@ -154,6 +154,7 @@ if ($currentStep == 4) {
     $symbolicLinks = $settingTableRows['symbolic_links'];
     $tableRows = $settingTableRows['table_rows'];
     $pass = $settingTableRows['pass'];
+    $mysqlInfo = $update->getMysqlVersionInfo();
     while ($isPost) {
         set_time_limit(300);
         try {
@@ -172,7 +173,7 @@ if ($currentStep == 4) {
     }
 }
 
-if (!empty($error)) {
+if (!empty($error) || (isset($mysqlInfo) && !$mysqlInfo['match'])) {
     $pass = false;
 }
 ?>
@@ -218,6 +219,9 @@ if (!empty($error)) {
                 echo '<div class="text-blue-500 pt-10">';
                 echo sprintf('This step will merge <code>%s</code> to <code>%s</code>, then insert into database.', $tableRows[1]['label'], $tableRows[0]['label']);
                 echo '</div>';
+                if (!$mysqlInfo['match']) {
+                    echo sprintf('<div class="text-red-700 pt-10">MySQL version: %s is too low, please use the newest version of 5.7 or above.</div>', $mysqlInfo['version']);
+                }
             } elseif ($currentStep > $maxStep) {
                 echo '<div class="text-green-900 text-6xl p-10">Congratulations, everything is ready!</div>';
                 echo '<div class="mb-6">For questions, consult the upgrade log at: <code>' . $update->getLogFile() . '</code></div>';