diff --git a/snappymail/v/0.0.0/php8.php b/snappymail/v/0.0.0/php8.php
index 82187567c..806afbce7 100644
--- a/snappymail/v/0.0.0/php8.php
+++ b/snappymail/v/0.0.0/php8.php
@@ -7,23 +7,31 @@ if (\PHP_VERSION_ID < 80000)
 		public function __toString() : string;
 	}
 
-	class ValueError extends Error
-	{
+	if (!class_exists('ValueError')) {
+		class ValueError extends Error
+		{
+		}
 	}
 
-	function str_contains(string $haystack, string $needle) : bool
-	{
-		return false !== strpos($haystack, $needle);
+	if (!function_exists('str_contains')) {
+		function str_contains(string $haystack, string $needle) : bool
+		{
+			return false !== strpos($haystack, $needle);
+		}
 	}
 
-	function str_starts_with(string $haystack, string $needle) : bool
-	{
-		return 0 === strncmp($haystack, $needle, strlen($needle));
+	if (!function_exists('str_starts_with')) {
+		function str_starts_with(string $haystack, string $needle) : bool
+		{
+			return 0 === strncmp($haystack, $needle, strlen($needle));
+		}
 	}
 
-	function str_ends_with(string $haystack, string $needle) : bool
-	{
-		$length = strlen($needle);
-		return $length ? substr($haystack, -$length) === $needle : true;
+	if (!function_exists('str_ends_with')) {
+		function str_ends_with(string $haystack, string $needle) : bool
+		{
+			$length = strlen($needle);
+			return $length ? substr($haystack, -$length) === $needle : true;
+		}
 	}
 }