Pass PHPStan level 9 (#6544)

* More PHPStan

* More, passing

* 4 more files

* Update to PHPStan 1.11.4
Needed for fixed bug: Consider numeric-string types after string concat
https://github.com/phpstan/phpstan/releases/tag/1.11.4

* Pass PHPStan level 9
Start tracking booleansInConditions

* Fix mark as read

* Fix doctype

* ctype_digit

1 files changed, 8 insertions, 6 deletions

diff --git a/lib/Minz/Helper.php b/lib/Minz/Helper.php
index 04539ec40..50243ded0 100644
--- a/lib/Minz/Helper.php
+++ b/lib/Minz/Helper.php
@@ -9,23 +9,25 @@ declare(strict_types=1);
 /**
  * The Minz_Helper class contains some misc. help functions
  */
-class Minz_Helper {
+final class Minz_Helper {
 
 	/**
 	 * Wrapper for htmlspecialchars.
-	 * Force UTf-8 value and can be used on array too.
+	 * Force UTF-8 value and can be used on array too.
 	 *
-	 * @phpstan-template T of string|array<mixed>
+	 * @phpstan-template T of mixed
 	 * @phpstan-param T $var
 	 * @phpstan-return T
 	 *
-	 * @param string|array<mixed> $var
-	 * @return string|array<mixed>
+	 * @param mixed $var
+	 * @return mixed
 	 */
 	public static function htmlspecialchars_utf8($var) {
 		if (is_array($var)) {
-			return array_map(['Minz_Helper', 'htmlspecialchars_utf8'], $var);
+			// @phpstan-ignore argument.type, return.type
+			return array_map([self::class, 'htmlspecialchars_utf8'], $var);
 		} elseif (is_string($var)) {
+			// @phpstan-ignore return.type
 			return htmlspecialchars($var, ENT_COMPAT, 'UTF-8');
 		} else {
 			return $var;