Fix several PHP8.1 warnings (#4123)

* Fix several PHP8.1 warnings
Taking advantage of https://github.com/FreshRSS/FreshRSS/pull/4121

* Couple oh type hints missing

* Compatibility PHP 7

* Fix variadic PHPDocs syntax

4 files changed, 5 insertions, 5 deletions

diff --git a/lib/Minz/ExtensionManager.php b/lib/Minz/ExtensionManager.php
index 2b42708f8..cad408aed 100644
--- a/lib/Minz/ExtensionManager.php
+++ b/lib/Minz/ExtensionManager.php
@@ -295,7 +295,7 @@ class Minz_ExtensionManager {
 	 * array keys.
 	 *
 	 * @param string $hook_name the hook to call.
-	 * @param mixed $args additional parameters (for signature, please see self::$hook_list).
+	 * @param mixed ...$args additional parameters (for signature, please see self::$hook_list).
 	 * @return mixed|null final result of the called hook.
 	 */
 	public static function callHook($hook_name, ...$args) {
diff --git a/lib/Minz/Migrator.php b/lib/Minz/Migrator.php
index 4d58a9bd3..71abbff3e 100644
--- a/lib/Minz/Migrator.php
+++ b/lib/Minz/Migrator.php
@@ -129,7 +129,7 @@ class Minz_Migrator
 	public function __construct($directory = null) {
 		$this->applied_versions = [];
 
-		if (!is_dir($directory)) {
+		if ($directory == null || !is_dir($directory)) {
 			return;
 		}
 
diff --git a/lib/Minz/Translate.php b/lib/Minz/Translate.php
index 4b860259e..19a86a00e 100644
--- a/lib/Minz/Translate.php
+++ b/lib/Minz/Translate.php
@@ -179,7 +179,7 @@ class Minz_Translate {
 	/**
 	 * Translate a key into its corresponding value based on selected language.
 	 * @param string $key the key to translate.
-	 * @param mixed $args additional parameters for variable keys.
+	 * @param mixed ...$args additional parameters for variable keys.
 	 * @return string value corresponding to the key.
 	 *         If no value is found, return the key itself.
 	 */
@@ -247,7 +247,7 @@ class Minz_Translate {
 /**
  * Alias for Minz_Translate::t()
  * @param string $key
- * @param mixed $args
+ * @param mixed ...$args
  */
 function _t($key, ...$args) {
 	return Minz_Translate::t($key, ...$args);
diff --git a/lib/Minz/Url.php b/lib/Minz/Url.php
index 777962e25..0bbf28b0d 100644
--- a/lib/Minz/Url.php
+++ b/lib/Minz/Url.php
@@ -121,7 +121,7 @@ class Minz_Url {
 /**
  * @param string $controller
  * @param string $action
- * @param string $args
+ * @param string ...$args
  */
 function _url ($controller, $action, ...$args) {
 	$nb_args = count($args);