diff --git a/src/wp-content/themes/twentytwenty/comments.php b/src/wp-content/themes/twentytwenty/comments.php
index c4ef803cba..91a3198eed 100644
--- a/src/wp-content/themes/twentytwenty/comments.php
+++ b/src/wp-content/themes/twentytwenty/comments.php
@@ -80,7 +80,7 @@ if ( $comments ) {
 				$pagination_classes = '';
 
 				// If we're only showing the "Next" link, add a class indicating so.
-				if ( ! str_contains( $comment_pagination, 'prev page-numbers' ) ) {
+				if ( false === strpos( $comment_pagination, 'prev page-numbers' ) ) {
 					$pagination_classes = ' only-next';
 				}
 				?>
diff --git a/src/wp-content/themes/twentytwenty/functions.php b/src/wp-content/themes/twentytwenty/functions.php
index 55cb7988c1..3f1a556d1d 100644
--- a/src/wp-content/themes/twentytwenty/functions.php
+++ b/src/wp-content/themes/twentytwenty/functions.php
@@ -323,7 +323,7 @@ function twentytwenty_get_custom_logo( $html ) {
 			);
 
 			// Add a style attribute with the height, or append the height to the style attribute if the style attribute already exists.
-			if ( ! str_contains( $html, ' style=' ) ) {
+			if ( false === strpos( $html, ' style=' ) ) {
 				$search[]  = '/(src=)/';
 				$replace[] = "style=\"height: {$logo_height}px;\" src=";
 			} else {
diff --git a/src/wp-content/themes/twentytwenty/template-parts/pagination.php b/src/wp-content/themes/twentytwenty/template-parts/pagination.php
index 036b6fd6f4..b5236ccb6c 100644
--- a/src/wp-content/themes/twentytwenty/template-parts/pagination.php
+++ b/src/wp-content/themes/twentytwenty/template-parts/pagination.php
@@ -37,12 +37,12 @@ $posts_pagination = get_the_posts_pagination(
 );
 
 // If we're not outputting the previous page link, prepend a placeholder with `visibility: hidden` to take its place.
-if ( ! str_contains( $posts_pagination, 'prev page-numbers' ) ) {
+if ( false === strpos( $posts_pagination, 'prev page-numbers' ) ) {
 	$posts_pagination = str_replace( '<div class="nav-links">', '<div class="nav-links"><span class="prev page-numbers placeholder" aria-hidden="true">' . $prev_text . '</span>', $posts_pagination );
 }
 
 // If we're not outputting the next page link, append a placeholder with `visibility: hidden` to take its place.
-if ( ! str_contains( $posts_pagination, 'next page-numbers' ) ) {
+if ( false === strpos( $posts_pagination, 'next page-numbers' ) ) {
 	$posts_pagination = str_replace( '</div>', '<span class="next page-numbers placeholder" aria-hidden="true">' . $next_text . '</span></div>', $posts_pagination );
 }