Add PHPStan (#4021)

* Add PHPStan
#fix https://github.com/FreshRSS/FreshRSS/issues/4016
https://phpstan.org/

```sh
composer run-script phpstan
```

* More fixes

* Fix global variables

* Add .phtml

* Fix merge
https://github.com/FreshRSS/FreshRSS/pull/4090

* Fix more warnings

* Fix view errors and enable in CI

* ReturnTypeWillChange

* Dynamic view type

* Fix Minz static/self bug

12 files changed, 17 insertions, 2 deletions

diff --git a/app/views/helpers/category/update.phtml b/app/views/helpers/category/update.phtml
index 085b49aa6..291dd7fc4 100644
--- a/app/views/helpers/category/update.phtml
+++ b/app/views/helpers/category/update.phtml
@@ -1,3 +1,4 @@
+<?php /** @var FreshRSS_View $this */ ?>
 <div class="post">
 	<h2><?= $this->category->name() ?></h2>
 
@@ -30,7 +31,7 @@
 			<div class="group-controls">
 				<button class="btn btn-important"><?= _t('gen.action.submit') ?></button>
 				<button type="reset" class="btn"><?= _t('gen.action.cancel') ?></button>
-				
+
 			</div>
 		</div>
 
diff --git a/app/views/helpers/configure/query.phtml b/app/views/helpers/configure/query.phtml
index a9bf4478d..3dc6c2459 100644
--- a/app/views/helpers/configure/query.phtml
+++ b/app/views/helpers/configure/query.phtml
@@ -1,3 +1,4 @@
+<?php /** @var FreshRSS_View $this */ ?>
 <div class="post">
 	<h2><?= $this->query->getName() ?></h2>
 
diff --git a/app/views/helpers/export/articles.phtml b/app/views/helpers/export/articles.phtml
index 0bbfb86ec..c131b8474 100644
--- a/app/views/helpers/export/articles.phtml
+++ b/app/views/helpers/export/articles.phtml
@@ -1,4 +1,5 @@
 <?php
+/** @var FreshRSS_View $this */
 $username = Minz_Session::param('currentUser', '_');
 
 $options = JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE;
diff --git a/app/views/helpers/export/opml.phtml b/app/views/helpers/export/opml.phtml
index edb4d4eda..971dc1445 100644
--- a/app/views/helpers/export/opml.phtml
+++ b/app/views/helpers/export/opml.phtml
@@ -1,4 +1,5 @@
 <?php
+/** @var FreshRSS_View $this */
 
 $opml_array = array(
 	'head' => array(
diff --git a/app/views/helpers/extension/configure.phtml b/app/views/helpers/extension/configure.phtml
index 4f8c521ae..ea68287b1 100644
--- a/app/views/helpers/extension/configure.phtml
+++ b/app/views/helpers/extension/configure.phtml
@@ -1,3 +1,4 @@
+<?php /** @var FreshRSS_View $this */ ?>
 <div class="post">
 	<h2>
 		<?= $this->extension->getName() ?> (<?= $this->extension->getVersion() ?>) —
diff --git a/app/views/helpers/extension/details.phtml b/app/views/helpers/extension/details.phtml
index ed9674e3d..f6b361c6f 100644
--- a/app/views/helpers/extension/details.phtml
+++ b/app/views/helpers/extension/details.phtml
@@ -1,3 +1,4 @@
+<?php /** @var FreshRSS_View $this */ ?>
 <ul class="horizontal-list">
 	<li class="item">
 		<?php if ($this->ext_details->getType() === 'user' || FreshRSS_Auth::hasAccess('admin')) { ?>
diff --git a/app/views/helpers/feed/update.phtml b/app/views/helpers/feed/update.phtml
index 703de3202..949c6492f 100644
--- a/app/views/helpers/feed/update.phtml
+++ b/app/views/helpers/feed/update.phtml
@@ -1,3 +1,4 @@
+<?php /** @var FreshRSS_View $this */ ?>
 <div class="post">
 	<h1><?= $this->feed->name() ?></h1>
 
diff --git a/app/views/helpers/index/normal/entry_bottom.phtml b/app/views/helpers/index/normal/entry_bottom.phtml
index bf1dc7b3d..07e68ed92 100644
--- a/app/views/helpers/index/normal/entry_bottom.phtml
+++ b/app/views/helpers/index/normal/entry_bottom.phtml
@@ -1,4 +1,5 @@
 <?php
+	/** @var FreshRSS_View $this */
 	$sharing = array();
 	if (FreshRSS_Auth::hasAccess()) {
 		$sharing = FreshRSS_Context::$user_conf->sharing;
diff --git a/app/views/helpers/index/normal/entry_header.phtml b/app/views/helpers/index/normal/entry_header.phtml
index 784a440a0..79e6e4215 100644
--- a/app/views/helpers/index/normal/entry_header.phtml
+++ b/app/views/helpers/index/normal/entry_header.phtml
@@ -1,4 +1,5 @@
 <?php
+	/** @var FreshRSS_View $this */
 	$topline_read = FreshRSS_Context::$user_conf->topline_read;
 	$topline_favorite = FreshRSS_Context::$user_conf->topline_favorite;
 	$topline_thumbnail = FreshRSS_Context::$user_conf->topline_thumbnail;
diff --git a/app/views/helpers/javascript_vars.phtml b/app/views/helpers/javascript_vars.phtml
index 256b6bf5f..3860c6204 100644
--- a/app/views/helpers/javascript_vars.phtml
+++ b/app/views/helpers/javascript_vars.phtml
@@ -1,4 +1,5 @@
 <?php
+/** @var FreshRSS_View $this */
 $mark = FreshRSS_Context::$user_conf->mark_when;
 $s = FreshRSS_Context::$user_conf->shortcuts;
 $extData = Minz_ExtensionManager::callHook('js_vars', []);
diff --git a/app/views/helpers/logs_pagination.phtml b/app/views/helpers/logs_pagination.phtml
index fa69d0b44..fe6a71a3a 100755
--- a/app/views/helpers/logs_pagination.phtml
+++ b/app/views/helpers/logs_pagination.phtml
@@ -1,4 +1,5 @@
 <?php
+	/** @var FreshRSS_View $this */
 	$c = Minz_Request::controllerName();
 	$a = Minz_Request::actionName();
 	$params = $_GET;
@@ -6,7 +7,10 @@
 
 <?php if ($this->nbPage > 1) { ?>
 <ul class="pagination">
-	<?php $params[$getteur] = 1; ?>
+	<?php
+		/** @var int $getteur */
+		$params[$getteur] = 1;
+	?>
 	<li class="item pager-first">
 		<?php if ($this->currentPage > 1) { ?>
 		<a href="<?= Minz_Url::display(array('c' => $c, 'a' => $a, 'params' => $params)) ?>">« <?= _t('gen.pagination.first') ?></a>
diff --git a/app/views/helpers/pagination.phtml b/app/views/helpers/pagination.phtml
index cefa835bd..9b249762c 100755
--- a/app/views/helpers/pagination.phtml
+++ b/app/views/helpers/pagination.phtml
@@ -1,4 +1,5 @@
 <?php
+	/** @var FreshRSS_View $this */
 	$url_next = Minz_Request::currentRequest();
 	$url_next['params']['next'] = FreshRSS_Context::$next_id;
 	$url_next['params']['state'] = FreshRSS_Context::$state;