Adição de verificação para evitar erros no PHP

IFRS · May 5, 2022 · c249ade · c249ade
1 parent 6c5d75d
commit c249ade
Showing 1 changed file with 32 additions and 28 deletions.
diff --git a/inc/lazyload.php b/inc/lazyload.php
@@ -1,47 +1,51 @@
 <?php
 // Lazyload Images
 function ifrs_add_lazyload($content) {
-    $content = mb_convert_encoding($content, 'HTML-ENTITIES', "UTF-8");
-    $dom = new DOMDocument();
-    @$dom->loadHTML($content);
+    if (!empty($content)) {
+        $content = mb_convert_encoding($content, 'HTML-ENTITIES', "UTF-8");
+        $dom = new DOMDocument();
+        @$dom->loadHTML($content);
 
-    $images = [];
+        $images = [];
 
-    foreach ($dom->getElementsByTagName('img') as $node) {
-        $images[] = $node;
-    }
+        foreach ($dom->getElementsByTagName('img') as $node) {
+            $images[] = $node;
+        }
 
-    foreach ($images as $node) {
-        $fallback = $node->cloneNode(true);
+        foreach ($images as $node) {
+            $fallback = $node->cloneNode(true);
 
-        $oldClass = $node->getAttribute('class');
-        $newClass = 'lazyload ' . $oldClass;
-        $node->setAttribute('class', $newClass);
+            $oldClass = $node->getAttribute('class');
+            $newClass = 'lazyload ' . $oldClass;
+            $node->setAttribute('class', $newClass);
 
-        $node->setAttribute('data-sizes', 'auto');
+            $node->setAttribute('data-sizes', 'auto');
 
-        $oldsrc = $node->getAttribute('src');
+            $oldsrc = $node->getAttribute('src');
 
-        if ($oldsrc) {
-            $node->setAttribute('data-src', $oldsrc);
-            $node->removeAttribute('src');
-        }
+            if ($oldsrc) {
+                $node->setAttribute('data-src', $oldsrc);
+                $node->removeAttribute('src');
+            }
 
-        $oldsrcset = $node->getAttribute('srcset');
+            $oldsrcset = $node->getAttribute('srcset');
 
-        if ($oldsrcset) {
-            $node->setAttribute('data-srcset', $oldsrcset);
-            $newsrcset = '';
-            $node->setAttribute('srcset', $newsrcset);
+            if ($oldsrcset) {
+                $node->setAttribute('data-srcset', $oldsrcset);
+                $newsrcset = '';
+                $node->setAttribute('srcset', $newsrcset);
+            }
+
+            $node->setAttribute('loading', 'lazy');
+            $node->setAttribute('decoding', 'async');
         }
 
-        $node->setAttribute('loading', 'lazy');
-        $node->setAttribute('decoding', 'async');
-    }
+        $newHtml = preg_replace('/^<!DOCTYPE.+?>/', '', str_replace( array('<html>', '</html>', '<body>', '</body>'), array('', '', '', ''), $dom->saveHTML()));
 
-    $newHtml = preg_replace('/^<!DOCTYPE.+?>/', '', str_replace( array('<html>', '</html>', '<body>', '</body>'), array('', '', '', ''), $dom->saveHTML()));
+        return $newHtml;
+    }
 
-    return $newHtml;
+    return $content;
 }
 
 add_filter('the_content', 'ifrs_add_lazyload', 99);