Upgrade PHPStan level to 5

[MAILPOET-1915]

RoboFile.php

@@ -378,7 +378,7 @@ class RoboFile extends \Robo\Tasks {
         'php -d memory_limit=2G '.
         "$dir/phpstan.phar analyse ".
         "--configuration $dir/tasks/phpstan/phpstan.neon ".
-        '--level 4 '.
+        '--level 5 '.
         "$dir/lib"
       )
       ->dir(__DIR__ . '/tasks/phpstan')

lib/Cron/Workers/SimpleWorker.php

@@ -116,7 +116,7 @@ abstract class SimpleWorker {
     $wp = new WPFunctions();
     $date = Carbon::createFromTimestamp($wp->currentTime('timestamp'));
     // Random day of the next week
-    $date->setISODate($date->format('o'), ((int)$date->format('W')) + 1, mt_rand(1, 7));
+    $date->setISODate((int)$date->format('o'), ((int)$date->format('W')) + 1, mt_rand(1, 7));
     $date->startOfDay();
     return $date;
   }

lib/DI/ContainerWrapper.php

@@ -8,16 +8,16 @@ use MailPoetVendor\Symfony\Component\DependencyInjection\Container;
 
 class ContainerWrapper implements ContainerInterface {
 
-  /** @var ContainerInterface */
+  /** @var Container */
   private $free_container;
 
-  /** @var ContainerInterface|null */
+  /** @var Container|null */
   private $premium_container;
 
   /** @var ContainerWrapper|null */
   private static $instance;
 
-  public function __construct(ContainerInterface $free_container, ContainerInterface $premium_container = null) {
+  public function __construct(Container $free_container, Container $premium_container = null) {
     $this->free_container = $free_container;
     $this->premium_container = $premium_container;
   }

lib/Models/Model.php

@@ -41,12 +41,12 @@ if (!defined('ABSPATH')) exit;
  * @method $this selectMany(...$values)
  * @method static static selectMany(...$values)
  * @method static selectManyExpr($values)
- * @method $this rawJoin($table, $constraint, $table_alias, $parameters = array())
- * @method $this innerJoin($table, $constraint, $table_alias=null)
- * @method $this join(string $table, string $constraint, $table_alias=null)
- * @method $this leftOuterJoin($table, $constraint, $table_alias=null)
- * @method $this rightOuterJoin($table, $constraint, $table_alias=null)
- * @method $this fullOuterJoin($table, $constraint, $table_alias=null)
+ * @method $this rawJoin(string $table, string|array $constraint, string $table_alias, array $parameters = array())
+ * @method $this innerJoin(string $table, string|array $constraint, string $table_alias=null)
+ * @method $this join(string $table, string|array $constraint, string $table_alias=null)
+ * @method $this leftOuterJoin(string $table, string|array $constraint, string $table_alias=null)
+ * @method $this rightOuterJoin(string $table, string|array $constraint, string $table_alias=null)
+ * @method $this fullOuterJoin(string $table, string|array $constraint, string $table_alias=null)
  * @method $this where($column_name, $value=null)
  * @method static $this where($column_name, $value=null)
  * @method $this whereEqual($column_name, $value=null)

lib/Newsletter/Renderer/Renderer.php

@@ -154,7 +154,7 @@ class Renderer {
 
   /**
    * @param string $template
-   * @param string $content
+   * @param string[] $content
    * @return string|string[]|null
    */
   private function injectContentIntoTemplate($template, $content) {

lib/Subscribers/ImportExport/Import/MailChimp.php

@@ -87,7 +87,7 @@ class MailChimp {
             }
             if (!isset($header_hash)) {
               $header_hash = md5(implode(',', $header));
-            } elseif (md5(implode(',', $header) !== $header_hash)) {
+            } elseif (md5(implode(',', $header)) !== $header_hash) {
               return $this->throwException('headers');
             }
           } else {

lib/Util/Security.php

@@ -15,7 +15,7 @@ class Security {
   static function generateRandomString($length = 5) {
     // non-cryptographically strong random generator
     return substr(
-      md5(uniqid(mt_rand(), true)),
+      md5(uniqid((string)mt_rand(), true)),
       0,
       min(max(5, (int)$length), 32)
     );

lib/Util/Url.php

@@ -10,7 +10,7 @@ class Url {
 
     // Remove WPFunctions::get()->homeUrl() path from add_query_arg
     if (isset($home_url['path'])) {
-      $query_args = str_replace($home_url['path'], null, $query_args);
+      $query_args = str_replace($home_url['path'], '', $query_args);
     }
 
     return WPFunctions::get()->homeUrl($query_args);

tasks/phpstan/phpstan.neon

@@ -6,6 +6,7 @@ parameters:
     - '#MailPoet\\Premium\\DI\\ContainerConfigurator not found#' # this class is not available when premium is not active
     - '#Call to an undefined method IdiormResultSet::set()#'
     - '#Argument of an invalid type pQuery\\IQuery supplied for foreach, only iterables are supported#'
+    - '#Parameter \#2 \$prefix of function http_build_query expects string, null given.#'
   reportUnmatchedIgnoredErrors: false
   dynamicConstantNames:
     - WP_DEBUG