PHP 8.1 > Fix some more null on string parameter

Author: thirsch

lib/config/sfViewConfigHandler.class.php

@@ -223,7 +223,7 @@ protected function addHtmlHead($viewName = '')
 
     foreach ($this->mergeConfigValue('metas', $viewName) as $name => $content)
     {
-      $data[] = sprintf("  \$response->addMeta('%s', '%s', false, false);", $name, str_replace('\'', '\\\'', preg_replace('/&(?=\w+;)/', '&', htmlspecialchars($content, ENT_QUOTES, sfConfig::get('sf_charset')))));
+      $data[] = sprintf("  \$response->addMeta('%s', '%s', false, false);", $name, str_replace('\'', '\\\'', preg_replace('/&(?=\w+;)/', '&', htmlspecialchars((string) $content, ENT_QUOTES, sfConfig::get('sf_charset')))));
     }
 
     return implode("\n", $data)."\n";

lib/request/sfWebRequest.class.php

@@ -192,7 +192,7 @@ public function getContentType($trim = true)
   {
     $contentType = $this->getHttpHeader('Content-Type', null);
 
-    if ($trim && false !== $pos = strpos($contentType, ';'))
+    if ($trim && false !== $pos = strpos((string) $contentType, ';'))
     {
       $contentType = substr($contentType, 0, $pos);
     }