Posts, Post Types: In `wp_trim_words()` make sure the `$num_words` parameter is always an integer, as documented, to avoid a PHP warning.

Props donmhico, pikamander2.
Fixes #47867.
Built from https://develop.svn.wordpress.org/trunk@45796


git-svn-id: http://core.svn.wordpress.org/trunk@45607 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/formatting.php

@@ -3728,7 +3728,7 @@ function wp_trim_excerpt( $text = '', $post = null ) {
 		 *
 		 * @param int $number The maximum number of words. Default 55.
 		 */
-		$excerpt_length = apply_filters( 'excerpt_length', $excerpt_length );
+		$excerpt_length = (int) apply_filters( 'excerpt_length', $excerpt_length );
 
 		/**
 		 * Filters the string in the "more" link displayed after a trimmed excerpt.
@@ -3773,6 +3773,7 @@ function wp_trim_words( $text, $num_words = 55, $more = null ) {
 
 	$original_text = $text;
 	$text          = wp_strip_all_tags( $text );
+	$num_words     = (int) $num_words;
 
 	/*
 	 * translators: If your word count is based on single characters (e.g. East Asian characters),

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.3-alpha-45795';
+$wp_version = '5.3-alpha-45796';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.