fix(guide): simplify directory structure

guide/english/php/functions/time/index.md

@@ -0,0 +1,18 @@
+---
+title: Time
+---
+## Time
+
+The `time()` function returns the current unix timestamp (number of seconds since the Unix Epoch - January 1 1970 00:00:00 GMT).
+
+### Example
+```php
+<?php
+echo time();
+```
+**Output:**
+```text
+1511732226
+```
+#### More Information:
+* <a href="https://secure.php.net/manual/en/function.time.php">php.net time() manual</a>