PHPStan level 6 for all PDO and Exception classes (#5239)

* PHPStan level 6 for all PDO and Exception classes
Contributes to https://github.com/FreshRSS/FreshRSS/issues/4112

* Fix type

* Now also our remaining own librairies

* Motivation for a few more files

* A few more DAO classes

* Last interface

1 files changed, 4 insertions, 2 deletions

diff --git a/app/Exceptions/ZipException.php b/app/Exceptions/ZipException.php
index 9ed40c4cb..ecf546533 100644
--- a/app/Exceptions/ZipException.php
+++ b/app/Exceptions/ZipException.php
@@ -1,14 +1,16 @@
 <?php
 
 class FreshRSS_Zip_Exception extends Exception {
+
+	/** @var int */
 	private $zipErrorCode = 0;
 
-	public function __construct($zipErrorCode) {
+	public function __construct(int $zipErrorCode) {
 		parent::__construct('ZIP error!', 2141);
 		$this->zipErrorCode = $zipErrorCode;
 	}
 
-	public function zipErrorCode() {
+	public function zipErrorCode(): int {
 		return $this->zipErrorCode;
 	}
 }