1 files changed, 13 insertions, 0 deletions
diff --git a/lib/lib_rss.php b/lib/lib_rss.php
index a1fadcb24..dda576b98 100644
--- a/lib/lib_rss.php
+++ b/lib/lib_rss.php
@@ -309,3 +309,16 @@ function uSecString() {
 function invalidateHttpCache() {
 	file_put_contents(DATA_PATH . '/touch.txt', uTimeString());
 }
+
+/**
+ * Add support of image lazy loading
+ * Move content from src attribute to data-original
+ * @param content is the text we want to parse
+ */
+function lazyimg($content) {
+	return preg_replace(
+		'/<img([^<]+)src=([\'"])([^"\']*)([\'"])([^<]*)>/i',
+		'<img$1src="' . Url::display('/data/grey.gif') . '" data-original="$3"$5>',
+		$content
+	);
+}