Inform return type of bool

Author: carusogabriel

ext/standard/basic_functions.c

@@ -2587,7 +2587,7 @@ ZEND_BEGIN_ARG_INFO_EX(arginfo_is_iterable, 0, 0, 1)
 	ZEND_ARG_INFO(0, var)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_INFO_EX(arginfo_is_countable, 0, 0, 1)
+ZEND_BEGIN_ARG_INFO(arginfo_is_countable, 0)
 	ZEND_ARG_INFO(0, var)
 ZEND_END_ARG_INFO()
 /* }}} */

ext/standard/tests/general_functions/is_countable_with_variables.phpt

@@ -6,7 +6,7 @@ Test is_countable() function
 var_dump(is_countable([1, 2, 3]));
 var_dump(is_countable((array) 1));
 var_dump(is_countable((object) ['foo', 'bar', 'baz']));
-
+var_dump(is_countable());
 
 $foo = ['', []];
 
@@ -24,6 +24,9 @@ if (!is_countable($bar)) {
 bool(true)
 bool(true)
 bool(false)
+
+Warning: is_countable() expects exactly 1 parameter, 0 given in %s on line %d
+NULL
 int(2)
 
 Warning: count(): Parameter must be an array or an object that implements Countable in %s on line %d