diff -r 7b1b88e27a20 -r 48c4eec2b7e6 wp/wp-includes/class-simplepie.php
--- a/wp/wp-includes/class-simplepie.php	Thu Sep 29 08:06:27 2022 +0200
+++ b/wp/wp-includes/class-simplepie.php	Fri Sep 05 18:40:08 2025 +0200
@@ -20,9 +20,11 @@
  * WordPress autoloader for SimplePie.
  *
  * @since 3.5.0
+ *
+ * @param string $class Class name.
  */
 function wp_simplepie_autoload( $class ) {
-	if ( 0 !== strpos( $class, 'SimplePie_' ) )
+	if ( ! str_starts_with( $class, 'SimplePie_' ) )
 		return;
 
 	$file = ABSPATH . WPINC . '/' . str_replace( '_', '/', $class ) . '.php';
@@ -338,7 +340,6 @@
 
 /**
  * RSS 2.0 Namespace
- * (Stupid, I know, but I'm certain it will confuse people less with support.)
  */
 define('SIMPLEPIE_NAMESPACE_RSS_20', '');
 
@@ -1203,12 +1204,12 @@
 	}
 
 	/**
-	 * Set options to make SP as fast as possible
+	 * Set options to make SimplePie as fast as possible.
 	 *
-	 * Forgoes a substantial amount of data sanitization in favor of speed. This
-	 * turns SimplePie into a dumb parser of feeds.
+	 * Forgoes a substantial amount of data sanitization in favor of speed.
+	 * This turns SimplePie into a less clever parser of feeds.
 	 *
-	 * @param bool $set Whether to set them or not
+	 * @param bool $set Whether to set them or not.
 	 */
 	public function set_stupidly_fast($set = false)
 	{
@@ -1864,7 +1865,7 @@
 	}
 
 	/**
-	 * Send the content-type header with correct encoding
+	 * Send the Content-Type header with correct encoding
 	 *
 	 * This method ensures that the SimplePie-enabled page is being served with
 	 * the correct {@link http://www.iana.org/assignments/media-types/ mime-type}
@@ -1886,7 +1887,7 @@
 	{
 		if (!headers_sent())
 		{
-			$header = "Content-type: $mime;";
+			$header = "Content-Type: $mime;";
 			if ($this->get_encoding())
 			{
 				$header .= ' charset=' . $this->get_encoding();