From ec7fb4d8504118d918699d5df8cd07c91af2f9b3 Mon Sep 17 00:00:00 2001
From: "FiveFilters.org" <fivefilters@fivefilters.org>
Date: Tue, 28 Dec 2021 17:16:05 +0100
Subject: Fixes

Reported here: https://forum.fivefilters.org/t/readability-php-fatal-error/1283
---
 src/Readability.php | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/Readability.php b/src/Readability.php
index 5c8fb84..6407a92 100644
--- a/src/Readability.php
+++ b/src/Readability.php
@@ -250,6 +250,11 @@ class Readability
             }
         }
 
+        if (!$result) {
+            $this->logger->info('*** Parse failed :(');
+            return false;
+        }
+
         $result = $this->postProcessContent($result);
 
         // If we haven't found an excerpt in the article's metadata, use the article's
@@ -369,6 +374,7 @@ class Readability
                 $metadata = [];
                 if (
                     !isset($parsed['@context']) ||
+                    !is_string($parsed['@context']) ||
                     !preg_match('/^https?\:\/\/schema\.org$/', $parsed['@context'])
                 ) {
                     return $metadata;
@@ -2137,6 +2143,9 @@ class Readability
         if ($node->nodeName !== 'h1' && $node->nodeName !== 'h2') {
             return false;
         }
+        if (!isset($this->title)) {
+            return false;
+        }
         $heading = $node->getTextContent(false);
         $this->logger->debug(sprintf('Evaluating similarity of header: %s"', $heading));
         return $this->textSimilarity($this->title, $heading) > 0.75;
-- 
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