PMA\libraries\DatabaseInterface::isUserType PHP Méthode

    public function isUserType($type)
    {
        if (Util::cacheExists('is_' . $type . 'user')) {
            return Util::cacheGet('is_' . $type . 'user');
        }
        // when connection failed we don't have a $userlink
        if (!isset($GLOBALS['userlink'])) {
            Util::cacheSet('is_' . $type . 'user', false);
            return Util::cacheGet('is_' . $type . 'user');
        }
        if (!$GLOBALS['cfg']['Server']['DisableIS'] || $type === 'super') {
            // Prepare query for each user type check
            $query = '';
            if ($type === 'super') {
                $query = 'SELECT 1 FROM mysql.user LIMIT 1';
            } elseif ($type === 'create') {
                list($user, $host) = $this->getCurrentUserAndHost();
                $query = "SELECT 1 FROM `INFORMATION_SCHEMA`.`USER_PRIVILEGES` " . "WHERE `PRIVILEGE_TYPE` = 'CREATE USER' AND " . "'''" . $user . "''@''" . $host . "''' LIKE `GRANTEE` LIMIT 1";
            } elseif ($type === 'grant') {
                list($user, $host) = $this->getCurrentUserAndHost();
                $query = "SELECT 1 FROM (" . "SELECT `GRANTEE`, `IS_GRANTABLE` FROM " . "`INFORMATION_SCHEMA`.`COLUMN_PRIVILEGES` UNION " . "SELECT `GRANTEE`, `IS_GRANTABLE` FROM " . "`INFORMATION_SCHEMA`.`TABLE_PRIVILEGES` UNION " . "SELECT `GRANTEE`, `IS_GRANTABLE` FROM " . "`INFORMATION_SCHEMA`.`SCHEMA_PRIVILEGES` UNION " . "SELECT `GRANTEE`, `IS_GRANTABLE` FROM " . "`INFORMATION_SCHEMA`.`USER_PRIVILEGES`) t " . "WHERE `IS_GRANTABLE` = 'YES' AND " . "'''" . $user . "''@''" . $host . "''' LIKE `GRANTEE` LIMIT 1";
            }
            $is = false;
            $result = $this->tryQuery($query, $GLOBALS['userlink'], self::QUERY_STORE);
            if ($result) {
                $is = (bool) $this->numRows($result);
            }
            $this->freeResult($result);
            Util::cacheSet('is_' . $type . 'user', $is);
        } else {
            $is = false;
            $grants = $this->fetchResult("SHOW GRANTS FOR CURRENT_USER();", null, null, $GLOBALS['userlink'], self::QUERY_STORE);
            if ($grants) {
                foreach ($grants as $grant) {
                    if ($type === 'create') {
                        if (strpos($grant, "ALL PRIVILEGES ON *.*") !== false || strpos($grant, "CREATE USER") !== false) {
                            $is = true;
                            break;
                        }
                    } elseif ($type === 'grant') {
                        if (strpos($grant, "WITH GRANT OPTION") !== false) {
                            $is = true;
                            break;
                        }
                    }
                }
            }
            Util::cacheSet('is_' . $type . 'user', $is);
        }
        return Util::cacheGet('is_' . $type . 'user');
    }