Add functions for checking if places or actor names are blacklisted

Close #6, close #7

src/NodaBlacklistedTerms.php

@@ -62,4 +62,58 @@ final class NodaBlacklistedTerms {
         return false;
 
     }
+
+    /**
+     * Checks if a place name is blacklisted in the DB.
+     *
+     * @param MDMysqli $mysqli DB connection.
+     * @param string   $lang   The user's currently used language.
+     * @param string   $name   The name entered by the user.
+     *
+     * @return boolean
+     */
+    public static function checkPlaceBlacklistedInDb(MDMysqli $mysqli, string $lang, string $name):bool {
+
+        $result = $mysqli->query_by_stmt("SELECT 1
+            FROM `" . DATABASENAME_NODA . "`.`orte_blacklist`
+            WHERE `language` = ?
+                AND `ort_name` = ?
+            LIMIT 1", "ss", $lang, $name);
+
+        if ($result->num_rows === 0) {
+            $result->close();
+            return false;
+        }
+
+        $result->close();
+        return true;
+
+    }
+
+    /**
+     * Checks if an actor name is blacklisted in the DB.
+     *
+     * @param MDMysqli $mysqli DB connection.
+     * @param string   $lang   The user's currently used language.
+     * @param string   $name   The name entered by the user.
+     *
+     * @return boolean
+     */
+    public static function checkPersinstBlacklistedInDb(MDMysqli $mysqli, string $lang, string $name):bool {
+
+        $result = $mysqli->query_by_stmt("SELECT 1
+            FROM `" . DATABASENAME_NODA . "`.`persinst_blacklist`
+            WHERE `language` = ?
+                AND `persinst_name` = ?
+            LIMIT 1", "ss", $lang, $name);
+
+        if ($result->num_rows === 0) {
+            $result->close();
+            return false;
+        }
+
+        $result->close();
+        return true;
+
+    }
 }