Disallow passing array as number to NumberFormatter::format()

Array to number conversion makes no sense here, and is likely to hide
a programming error.  Therefore we disallow passing an array in the
first place.

Author: cmb69

ext/intl/formatter/formatter_format.c

@@ -44,15 +44,15 @@ PHP_FUNCTION( numfmt_format )
 	{
 		RETURN_THROWS();
 	}
+	if(Z_TYPE_P(number) == IS_ARRAY) {
+		zend_type_error("given value must not be an array");
+		RETURN_THROWS();
+	}
 
 	/* Fetch the object. */
 	FORMATTER_METHOD_FETCH_OBJECT;
 
-	if(Z_TYPE_P(number) != IS_ARRAY) {
-		convert_scalar_to_number_ex(number);
-	} else {
-		convert_to_long(number);
-	}
+	convert_scalar_to_number_ex(number);
 
 	if(type == FORMAT_TYPE_DEFAULT) {
 		switch(Z_TYPE_P(number)) {

ext/intl/tests/bug79212.phpt

@@ -15,4 +15,9 @@ var_dump($fmt->format([1], NumberFormatter::TYPE_INT64));
 ?>
 --EXPECTF--
 string(21) "823749273428379%c%c%c%c%c%c"
-string(1) "1"
+
+Fatal error: Uncaught TypeError: given value must not be an array in %s:%d
+Stack trace:
+#0 %s(%d): NumberFormatter->format(Array, 2)
+#1 {main}
+  thrown in %s on line %d