Fixed bug GH-7758 (Problems with negative timestamps and fractions)

Author: derickr

NEWS

@@ -5,6 +5,10 @@ PHP                                                                        NEWS
 - CLI:
   . Fixed bug GH-8575 (CLI closes standard streams too early). (Levi Morrison)
 
+- Date:
+  . Fixed bug GH-7758 (Problems with negative timestamps and fractions).
+    (Derick, Ilija)
+
 - FPM:
   . Fixed ACL build check on MacOS. (David Carlier)
   . Fixed bug #72185: php-fpm writes empty fcgi record causing nginx 502.

ext/date/tests/gh7758.phpt

@@ -0,0 +1,42 @@
+--TEST--
+GH-7758 (Problems with negative timestamps and fractions)
+--FILE--
+<?php
+date_default_timezone_set('UTC');
+
+foreach ([0.4, 0, -0.4, -1, -1.4] as $ts) {
+    $date = new DateTime('@' . $ts);
+    print_r($date);
+}
+?>
+--EXPECT--
+DateTime Object
+(
+    [date] => 1970-01-01 00:00:00.400000
+    [timezone_type] => 1
+    [timezone] => +00:00
+)
+DateTime Object
+(
+    [date] => 1970-01-01 00:00:00.000000
+    [timezone_type] => 1
+    [timezone] => +00:00
+)
+DateTime Object
+(
+    [date] => 1969-12-31 23:59:59.600000
+    [timezone_type] => 1
+    [timezone] => +00:00
+)
+DateTime Object
+(
+    [date] => 1969-12-31 23:59:59.000000
+    [timezone_type] => 1
+    [timezone] => +00:00
+)
+DateTime Object
+(
+    [date] => 1969-12-31 23:59:58.600000
+    [timezone_type] => 1
+    [timezone] => +00:00
+)