Update website

admin/phpMyAdmin/libraries/classes/Utils/ForeignKey.php

@@ -0,0 +1,92 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PhpMyAdmin\Utils;
+
+use function strtolower;
+use function strtoupper;
+use function substr;
+use function version_compare;
+
+final class ForeignKey
+{
+    /**
+     * Verifies if this table's engine supports foreign keys
+     *
+     * @param string $engine engine
+     */
+    public static function isSupported($engine): bool
+    {
+        global $dbi;
+
+        $engine = strtoupper((string) $engine);
+        if (($engine === 'INNODB') || ($engine === 'PBXT')) {
+            return true;
+        }
+
+        if ($engine === 'NDBCLUSTER' || $engine === 'NDB') {
+            $ndbver = strtolower(
+                $dbi->fetchValue('SELECT @@ndb_version_string') ?: ''
+            );
+            if (substr($ndbver, 0, 4) === 'ndb-') {
+                $ndbver = substr($ndbver, 4);
+            }
+
+            return version_compare($ndbver, '7.3', '>=');
+        }
+
+        return false;
+    }
+
+    /**
+     * Is Foreign key check enabled?
+     */
+    public static function isCheckEnabled(): bool
+    {
+        global $dbi;
+
+        if ($GLOBALS['cfg']['DefaultForeignKeyChecks'] === 'enable') {
+            return true;
+        }
+
+        if ($GLOBALS['cfg']['DefaultForeignKeyChecks'] === 'disable') {
+            return false;
+        }
+
+        return $dbi->getVariable('FOREIGN_KEY_CHECKS') === 'ON';
+    }
+
+    /**
+     * Handle foreign key check request
+     */
+    public static function handleDisableCheckInit(): bool
+    {
+        global $dbi;
+
+        $defaultCheckValue = $dbi->getVariable('FOREIGN_KEY_CHECKS') === 'ON';
+        if (isset($_REQUEST['fk_checks'])) {
+            if (empty($_REQUEST['fk_checks'])) {
+                // Disable foreign key checks
+                $dbi->setVariable('FOREIGN_KEY_CHECKS', 'OFF');
+            } else {
+                // Enable foreign key checks
+                $dbi->setVariable('FOREIGN_KEY_CHECKS', 'ON');
+            }
+        }
+
+        return $defaultCheckValue;
+    }
+
+    /**
+     * Cleanup changes done for foreign key check
+     *
+     * @param bool $defaultCheckValue original value for 'FOREIGN_KEY_CHECKS'
+     */
+    public static function handleDisableCheckCleanup(bool $defaultCheckValue): void
+    {
+        global $dbi;
+
+        $dbi->setVariable('FOREIGN_KEY_CHECKS', $defaultCheckValue ? 'ON' : 'OFF');
+    }
+}