-extern zend_object_value php_http_message_object_new(zend_class_entry *ce TSRMLS_DC);
-extern zend_object_value php_http_message_object_new_ex(zend_class_entry *ce, php_http_message_t *msg, php_http_message_object_t **ptr TSRMLS_DC);
-extern zend_object_value php_http_message_object_clone(zval *object TSRMLS_DC);
-extern void php_http_message_object_free(void *object TSRMLS_DC);
+zend_object_value php_http_message_object_new(zend_class_entry *ce TSRMLS_DC);
+zend_object_value php_http_message_object_new_ex(zend_class_entry *ce, php_http_message_t *msg, php_http_message_object_t **ptr TSRMLS_DC);
+zend_object_value php_http_message_object_clone(zval *object TSRMLS_DC);
+void php_http_message_object_free(void *object TSRMLS_DC);