ensure variable is of type string

inc/block-editor.php

@@ -44,6 +44,9 @@ if ( ! function_exists( 'understrap_generate_color_palette' ) ) {
 			$color_palette_json = json_decode( $color_palette_json, true );
 			if ( is_array( $color_palette_json ) ) {
 				foreach ( $color_palette_json as $key => $value ) {
+					if ( ! is_string( $key ) ) {
+						continue;
+					}
 					$key             = str_replace( array( '--bs-', '--' ), '', $key );
 					$color_palette[] = array(
 						'name'  => $key,

inc/custom-comments.php

@@ -97,7 +97,11 @@ if ( ! function_exists( 'understrap_comment_form_comments_closed' ) ) {
 	 * Displays a note that comments are closed if comments are closed and there are comments.
 	 */
 	function understrap_comment_form_comments_closed() {
-		if ( get_comments_number() && post_type_supports( get_post_type(), 'comments' ) ) {
+		$post_type = get_post_type();
+		if ( false === $post_type ) {
+			return;
+		}
+		if ( get_comments_number() && post_type_supports( $post_type, 'comments' ) ) {
 			?>
 			<p class="no-comments"><?php esc_html_e( 'Comments are closed.', 'understrap' ); ?></p>
 			<?php

inc/jetpack.php

@@ -47,11 +47,15 @@ if ( ! function_exists( 'understrap_components_infinite_scroll_render' ) ) {
 	function understrap_components_infinite_scroll_render() {
 		while ( have_posts() ) {
 			the_post();
-			if ( is_search() ) :
+			if ( is_search() ) {
 				get_template_part( 'loop-templates/content', 'search' );
-			else :
-				get_template_part( 'loop-templates/content', get_post_format() );
-			endif;
+			} else {
+				$post_format = get_post_format();
+				if ( false === $post_format ) {
+					$post_format = '';
+				}
+				get_template_part( 'loop-templates/content', $post_format );
+			}
 		}
 	}
 }

inc/woocommerce.php

@@ -41,6 +41,10 @@ if ( ! function_exists( 'understrap_woocommerce_wrapper_start' ) ) {
 	 */
 	function understrap_woocommerce_wrapper_start() {
 		$container = get_theme_mod( 'understrap_container_type' );
+		if ( false === $container ) {
+			$container = '';
+		}
+
 		echo '<div class="wrapper" id="woocommerce-wrapper">';
 		echo '<div class="' . esc_attr( $container ) . '" id="content" tabindex="-1">';
 		echo '<div class="row">';