fix for html

lib/Telegraph/FindLinks.php

@@ -45,7 +45,7 @@ class FindLinks {
    * @return mixed array of links in text block.
    */
   public static function inHTML($html) {
-    if(!is_string($input)) return [];
+    if(!is_string($html)) return [];
 
     $doc = new DOMDocument();
     libxml_use_internal_errors(true); # suppress parse errors and warnings

tests/FindLinksTest.php

@@ -38,5 +38,19 @@ class FindLinksTest extends PHPUnit_Framework_TestCase {
     $this->assertContains('http://example.html/', $links);
   }
 
+  public function testFindLinksInXRayResult() {
+    $data = json_decode('
+{"data":{"type":"entry","published":"2018-06-19T14:32:44-07:00","url":"https://aaronparecki.com/2018/06/19/12/indiewebsummit","category":["indieweb"],"syndication":["https://twitter.com/aaronpk/status/1009187255204732928"],"content":{"text":"I\'m excited to announce that @namedotcom is our newest sponsor of @IndieWebSummit and they\'ll be joining us next week! It\'s not too late to register! \ud83d\udd1c https://2018.indieweb.org","html":"I\'m excited to announce that <a href=\"https://twitter.com/namedotcom\">@namedotcom</a> is our newest sponsor of <a href=\"https://twitter.com/IndieWebSummit\">@IndieWebSummit</a> and they\'ll be joining us next week! It\'s not too late to register! <a href=\"https://aaronparecki.com/emoji/%F0%9F%94%9C\">\ud83d\udd1c</a> <a href=\"https://2018.indieweb.org\">https://2018.indieweb.org</a>"},"author":{"type":"card","name":"Aaron Parecki","url":"https://aaronparecki.com/","photo":"https://aaronparecki.com/images/profile.jpg"}},"url":"https://aaronparecki.com/2018/06/19/12/indiewebsummit","code":200}
+', true);
+    unset($data['data']['author']);
+    $links = FindLinks::all($data['data']);
+    $this->assertContains('https://aaronparecki.com/2018/06/19/12/indiewebsummit', $links);
+    $this->assertContains('https://twitter.com/aaronpk/status/1009187255204732928', $links);
+    $this->assertContains('https://2018.indieweb.org', $links);
+    $this->assertContains('https://twitter.com/namedotcom', $links);
+    $this->assertContains('https://twitter.com/IndieWebSummit', $links);
+    $this->assertContains('https://aaronparecki.com/emoji/%F0%9F%94%9C', $links);
+  }
+
 }