Add GINIT FUNCTION.

Author: cdoco

README.md

@@ -12,7 +12,8 @@
 
 ```shell
 $ git clone https://github.com/cdoco/hashids.phpc.git
-$ cd hashids.phpc && phpize && ./configure && make && make install
+$ cd hashids.phpc
+$ phpize && ./configure && make && make install
 ```
 
 you can set some options in php.ini, or set in the constructor.

hashids.c

@@ -339,6 +339,12 @@ static const zend_function_entry hashids_methods[] = {
     PHP_FE_END
 };
 
+PHP_GINIT_FUNCTION(hashids) {
+    hashids_globals->salt = NULL;
+    hashids_globals->min_hash_length = 0;
+    hashids_globals->alphabet = HASHIDS_DEFAULT_ALPHABET;
+}
+
 PHP_MINIT_FUNCTION(hashids)
 {
     REGISTER_INI_ENTRIES();