Merge branch '3.4' into 4.4

* 3.4:
  account for is_numeric() behavior changes in PHP 8
  fix expected exception messages on PHP 8

Author: fabpot

Inline.php

@@ -161,7 +161,7 @@ public static function dump($value, int $flags = 0): string
                 return 'false';
             case ctype_digit($value):
                 return \is_string($value) ? "'$value'" : (int) $value;
-            case is_numeric($value):
+            case is_numeric($value) && false === strpos($value, "\n"):
                 $locale = setlocale(LC_NUMERIC, 0);
                 if (false !== $locale) {
                     setlocale(LC_NUMERIC, 'C');