diff --git a/wp-content/themes/twentyseventeen/inc/icon-functions.php b/wp-content/themes/twentyseventeen/inc/icon-functions.php
index b25428fb1d..82a1ebedcc 100644
--- a/wp-content/themes/twentyseventeen/inc/icon-functions.php
+++ b/wp-content/themes/twentyseventeen/inc/icon-functions.php
@@ -130,7 +130,7 @@ function twentyseventeen_nav_menu_social_icons( $item_output, $item, $depth, $ar
 	// Change SVG icon inside social links menu if there is supported URL.
 	if ( 'social' === $args->theme_location ) {
 		foreach ( $social_icons as $attr => $value ) {
-			if ( str_contains( $item_output, $attr ) ) {
+			if ( false !== strpos( $item_output, $attr ) ) {
 				$item_output = str_replace( $args->link_after, '</span>' . twentyseventeen_get_svg( array( 'icon' => esc_attr( $value ) ) ), $item_output );
 			}
 		}
diff --git a/wp-content/themes/twentyseventeen/template-parts/post/content-audio.php b/wp-content/themes/twentyseventeen/template-parts/post/content-audio.php
index d50ce9f66a..eea60e6c7c 100644
--- a/wp-content/themes/twentyseventeen/template-parts/post/content-audio.php
+++ b/wp-content/themes/twentyseventeen/template-parts/post/content-audio.php
@@ -46,7 +46,7 @@
 		$audio   = false;
 
 		// Only get audio from the content if a playlist isn't present.
-	if ( ! str_contains( $content, 'wp-playlist-script' ) ) {
+	if ( false === strpos( $content, 'wp-playlist-script' ) ) {
 		$audio = get_media_embedded_in_content( $content, array( 'audio' ) );
 	}
 
diff --git a/wp-content/themes/twentyseventeen/template-parts/post/content-video.php b/wp-content/themes/twentyseventeen/template-parts/post/content-video.php
index a5c387e767..fd7865db92 100644
--- a/wp-content/themes/twentyseventeen/template-parts/post/content-video.php
+++ b/wp-content/themes/twentyseventeen/template-parts/post/content-video.php
@@ -46,7 +46,7 @@
 		$video   = false;
 
 		// Only get video from the content if a playlist isn't present.
-	if ( ! str_contains( $content, 'wp-playlist-script' ) ) {
+	if ( false === strpos( $content, 'wp-playlist-script' ) ) {
 		$video = get_media_embedded_in_content( $content, array( 'video', 'object', 'embed', 'iframe' ) );
 	}
 	?>
diff --git a/wp-includes/version.php b/wp-includes/version.php
index b9d55c9f6a..f09f068c9b 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.5-alpha-57274';
+$wp_version = '6.5-alpha-57275';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.