Check for null string before escaping

This avoids a `ltrim(): Passing null to parameter #1 ($string) of type string is deprecated` notice on PHP 8.1.
Automattic · Dec 7, 2023 · ab983e7 · ab983e7
1 parent 92993a8
commit ab983e7
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/wp-cache-phase2.php b/wp-cache-phase2.php
@@ -391,7 +391,7 @@ function wp_cache_postload() {
 	global $wp_cache_request_uri;
 
 	// have to sanitize here because formatting.php is loaded after wp_cache_request_uri is set
-	$wp_cache_request_uri = esc_url_raw( wp_unslash( $wp_cache_request_uri ) );
+	$wp_cache_request_uri = esc_url_raw( wp_unslash( $wp_cache_request_uri ? $wp_cache_request_uri : '' ) );
 
 	if ( ! $cache_enabled ) {
 		return true;