require PHP 5.3.4 or later

Author: Bulat Shakirzyanov

README.md

@@ -63,7 +63,7 @@ Cassandra's native protocol. The current version works with:
 
 * Apache Cassandra versions 1.2, 2.0 and partially 2.1
 * DataStax Enterprise 3.1, 3.2, 4.0 and 4.5
-* PHP 5.3+
+* PHP 5.3.4+
 
 __NOTE__: Apache Cassandra 2.1 support is limited to the Cassandra 2.0 API, e.g. no user-defined types.
 

ext/php_cassandra.h

@@ -22,6 +22,10 @@
 #include <Zend/zend_exceptions.h>
 #include <Zend/zend_interfaces.h>
 
+#if PHP_VERSION_ID < 50304
+#  error PHP 5.3.4 or later is required in order to build the driver
+#endif
+
 #if HAVE_SPL
 #  include <ext/spl/spl_iterators.h>
 #  include <ext/spl/spl_exceptions.h>