Merge branch 'PHP-7.0' into PHP-7.1

* PHP-7.0:
  added a test for date_interval_format function
  Merge branch 'pull-request/2198'

Author: krakjoe

ext/date/tests/date_interval_format.phpt

@@ -0,0 +1,21 @@
+--TEST--
+Test date_interval_format() function : basic functionality
+--CREDITS--
+Jean Carlo Machado <contato@jeancarlomachado.com.br>
+--INI--
+date.timezone=UTC
+--FILE--
+<?php
+
+$interval = new DateInterval('P2Y4DT6H8M');
+echo date_interval_format($interval, '%d days');
+
+echo PHP_EOL;
+
+$interval = new DateInterval('P32D');
+echo date_interval_format($interval, '%d days');
+
+?>
+--EXPECTF--
+4 days
+32 days