From 64c6fa8f56872cdbb4584782ce5c24e13a3cc5ca Mon Sep 17 00:00:00 2001
From: Daniel Kraus <bovender@bovender.de>
Date: Tue, 28 Nov 2023 21:22:35 +0100
Subject: [PATCH] Prevent deprecation warnings due to null strings.

Fixes #11.
---
 includes/PubmedParser_Article.php | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/includes/PubmedParser_Article.php b/includes/PubmedParser_Article.php
index a9d8778..2d5cb8b 100644
--- a/includes/PubmedParser_Article.php
+++ b/includes/PubmedParser_Article.php
@@ -116,7 +116,7 @@ private function parse( \XMLReader $reader ) {
 						}
 						break;
 					case 'AbstractText':
-						$label = strip_tags( $reader->getAttribute( 'Label' ) );
+						$label = strip_tags( $reader->getAttribute( 'Label' ?? '' ) );
 						$label = trim( preg_replace( '/\s\s+/', ' ', $label ) );
 						$content = strip_tags( $reader->readInnerXML() );
 						$content = trim( preg_replace( '/\s\s+/', ' ', $content ) );
@@ -226,8 +226,10 @@ function journalCaps() {
 
 	/// Returns the first page of the article.
 	function firstPage() {
-		$fp = explode('-', $this->pages);
-		return $fp[0];
+		if ( $this->pages ) {
+			$fp = explode('-', $this->pages);
+			return $fp[0];
+		}
 	}
 
 	function journalAbbrevNoPeriods() {