Merge branch 'PHP-7.4'

Author: nikic

tests/classes/constants_basic_001.phpt

@@ -67,7 +67,7 @@ float(-1.5)
 int(13)
 string(%d) "%s"
 string(1) "C"
-string(1) "C"
+string(0) ""
 string(0) ""
 int(1234)
 int(456)