Issue #3377120: Regex pattern is invalid: The /e modifier is no longer supported

src/Controller/PWAController.php

@@ -184,15 +184,20 @@ class PWAController implements ContainerInjectionInterface {
       @$dom->loadHTML($data);
 
       $xpath = new \DOMXPath($dom);
+      // Get all scripts with a src attribute and save the src:
       foreach ($xpath->query('//script[@src]') as $script) {
         $page_resources[] = $script->getAttribute('src');
       }
+      // Get all links with a relationship to a stylesheet and safe its
+      // reference:
       foreach ($xpath->query('//link[@rel="stylesheet"][@href]') as $stylesheet) {
         $page_resources[] = $stylesheet->getAttribute('href');
       }
+      // @todo Get all style elements with attribute set to "all" or "screen"
+      // and filter them out based on ???.
       foreach ($xpath->query('//style[@media="all" or @media="screen"]') as $stylesheets) {
         preg_match_all(
-          "#(/(\S*?\.\S*?))(\s|\;|\)|\]|\[|\{|\}|,|\"|'|:|\<|$|\.\s)#ie",
+          "#(/(\S*?\.\S*?))(\s|\;|\)|\]|\[|\{|\}|,|\"|'|:|\<|$|\.\s)#i",
           ' ' . $stylesheets->textContent,
           $matches
         );
         $page_resources = array_merge($page_resources, $matches[0]);
       }
       foreach ($xpath->query('//img[@src]') as $image) {
         $page_resources[] = $image->getAttribute('src');
       }
 

[Julian Pustkuchen]

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