Upgrade to PHP 8.1 (#6711)

* Upgrade to PHP 8.1
As discussed in https://github.com/FreshRSS/FreshRSS/discussions/5474

https://www.php.net/releases/8.0/en.php
https://www.php.net/releases/8.1/en.php

Upgrade to available native type declarations
https://php.net/language.types.declarations

Upgrade to https://phpunit.de/announcements/phpunit-10.html which requires PHP 8.1+ (good timing, as version 9 was not maintained anymore)

Upgrade `:oldest` Docker dev image to oldest Alpine version supporting PHP 8.1: Alpine 3.16, which includes PHP 8.1.22.

* Include 6736
https://github.com/FreshRSS/FreshRSS/pull/6736

1 files changed, 5 insertions, 7 deletions

diff --git a/lib/Minz/Configuration.php b/lib/Minz/Configuration.php
index 7205f3009..89aea4fae 100644
--- a/lib/Minz/Configuration.php
+++ b/lib/Minz/Configuration.php
@@ -56,10 +56,9 @@ class Minz_Configuration {
 	 * Return the configuration related to a given namespace.
 	 *
 	 * @param string $namespace the name of the configuration to get.
-	 * @return static object
 	 * @throws Minz_ConfigurationNamespaceException if the namespace does not exist.
 	 */
-	public static function get(string $namespace) {
+	public static function get(string $namespace): static {
 		if (!isset(self::$config_list[$namespace])) {
 			throw new Minz_ConfigurationNamespaceException(
 				$namespace . ' namespace does not exist'
@@ -156,7 +155,7 @@ class Minz_Configuration {
 	 * @param mixed $default default value to return if key does not exist.
 	 * @return array|mixed value corresponding to the key.
 	 */
-	public function param(string $key, $default = null) {
+	public function param(string $key, mixed $default = null): mixed {
 		if (isset($this->data[$key])) {
 			return $this->data[$key];
 		} elseif (!is_null($default)) {
@@ -171,7 +170,7 @@ class Minz_Configuration {
 	 * A wrapper for param().
 	 * @return array|mixed
 	 */
-	public function __get(string $key) {
+	public function __get(string $key): mixed {
 		return $this->param($key);
 	}
 
@@ -181,7 +180,7 @@ class Minz_Configuration {
 	 * @param string $key the param name to set.
 	 * @param mixed $value the value to set. If null, the key is removed from the configuration.
 	 */
-	public function _param(string $key, $value = null): void {
+	public function _param(string $key, mixed $value = null): void {
 		if ($this->configuration_setter !== null && $this->configuration_setter->support($key)) {
 			$this->configuration_setter->handle($this->data, $key, $value);
 		} elseif (isset($this->data[$key]) && is_null($value)) {
@@ -193,9 +192,8 @@ class Minz_Configuration {
 
 	/**
 	 * A wrapper for _param().
-	 * @param mixed $value
 	 */
-	public function __set(string $key, $value): void {
+	public function __set(string $key, mixed $value): void {
 		$this->_param($key, $value);
 	}