diff --git a/CHANGELOG b/CHANGELOG
index 5754396f8f1..42f796e14e5 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -94,6 +94,8 @@
    - Database dialects now support BOOLEAN data type (#816)
    - Added support for POINT type in MySQL (#1536)
    - Fixed issue with RawValue('default') on composite primary key (#1534)
+   - Added support for the following fetch modes from PDO: FETCH_LAZY, FETCH_BOUND, FETCH_COLUMN, FETCH_CLASS, FETCH_INTO, FETCH_FUNC, FETCH_NAMED, FETCH_KEY_PAIR (#1642)
+   - Added support for the following fetch mode modifiers from PDO: FETCH_GROUP, FETCH_UNIQUE, FETCH_CLASSTYPE, FETCH_SERIALIZE, FETCH_PROPS_LATE (#1642)
  - Phalcon\Debug:
    - Added support for UTF-8 to \Phalcon\Debug (#1099)
    - Phalcon\Debug::uri now supports both http and https (#987)
diff --git a/ext/db.c b/ext/db.c
index 9dc2f546fa5..2ae2f78a8c7 100644
--- a/ext/db.c
+++ b/ext/db.c
@@ -29,6 +29,8 @@
 #include "Zend/zend_exceptions.h"
 #include "Zend/zend_interfaces.h"
 
+#include "ext/pdo/php_pdo_driver.h"
+
 #include "kernel/main.h"
 #include "kernel/memory.h"
 
@@ -81,10 +83,25 @@ PHALCON_INIT_CLASS(Phalcon_Db){
 
 	PHALCON_REGISTER_CLASS(Phalcon, Db, db, phalcon_db_method_entry, ZEND_ACC_EXPLICIT_ABSTRACT_CLASS);
 
-	zend_declare_class_constant_long(phalcon_db_ce, SL("FETCH_ASSOC"), 1 TSRMLS_CC);
-	zend_declare_class_constant_long(phalcon_db_ce, SL("FETCH_BOTH"), 2 TSRMLS_CC);
-	zend_declare_class_constant_long(phalcon_db_ce, SL("FETCH_NUM"), 3 TSRMLS_CC);
-	zend_declare_class_constant_long(phalcon_db_ce, SL("FETCH_OBJ"), 4 TSRMLS_CC);
+	zend_declare_class_constant_long(phalcon_db_ce, SL("FETCH_USE_DEFAULT"), (long int)PDO_FETCH_USE_DEFAULT TSRMLS_CC);
+	zend_declare_class_constant_long(phalcon_db_ce, SL("FETCH_LAZY"),        (long int)PDO_FETCH_LAZY TSRMLS_CC);
+	zend_declare_class_constant_long(phalcon_db_ce, SL("FETCH_ASSOC"),       (long int)PDO_FETCH_ASSOC TSRMLS_CC);
+	zend_declare_class_constant_long(phalcon_db_ce, SL("FETCH_NUM"),         (long int)PDO_FETCH_NUM TSRMLS_CC);
+	zend_declare_class_constant_long(phalcon_db_ce, SL("FETCH_BOTH"),        (long int)PDO_FETCH_BOTH TSRMLS_CC);
+	zend_declare_class_constant_long(phalcon_db_ce, SL("FETCH_OBJ"),         (long int)PDO_FETCH_OBJ TSRMLS_CC);
+	zend_declare_class_constant_long(phalcon_db_ce, SL("FETCH_BOUND"),       (long int)PDO_FETCH_BOUND TSRMLS_CC);
+	zend_declare_class_constant_long(phalcon_db_ce, SL("FETCH_COLUMN"),      (long int)PDO_FETCH_COLUMN TSRMLS_CC);
+	zend_declare_class_constant_long(phalcon_db_ce, SL("FETCH_CLASS"),       (long int)PDO_FETCH_CLASS TSRMLS_CC);
+	zend_declare_class_constant_long(phalcon_db_ce, SL("FETCH_INTO"),        (long int)PDO_FETCH_INTO TSRMLS_CC);
+	zend_declare_class_constant_long(phalcon_db_ce, SL("FETCH_FUNC"),        (long int)PDO_FETCH_FUNC TSRMLS_CC);
+	zend_declare_class_constant_long(phalcon_db_ce, SL("FETCH_NAMED"),       (long int)PDO_FETCH_NAMED TSRMLS_CC);
+	zend_declare_class_constant_long(phalcon_db_ce, SL("FETCH_KEY_PAIR") ,   (long int)PDO_FETCH_KEY_PAIR TSRMLS_CC);
+
+	zend_declare_class_constant_long(phalcon_db_ce, SL("FETCH_GROUP"),       (long int)PDO_FETCH_GROUP TSRMLS_CC);
+	zend_declare_class_constant_long(phalcon_db_ce, SL("FETCH_UNIQUE"),      (long int)PDO_FETCH_UNIQUE TSRMLS_CC);
+	zend_declare_class_constant_long(phalcon_db_ce, SL("FETCH_CLASSTYPE"),   (long int)PDO_FETCH_CLASSTYPE TSRMLS_CC);
+	zend_declare_class_constant_long(phalcon_db_ce, SL("FETCH_SERIALIZE"),   (long int)PDO_FETCH_SERIALIZE TSRMLS_CC);
+	zend_declare_class_constant_long(phalcon_db_ce, SL("FETCH_PROPS_LATE"),  (long int)PDO_FETCH_PROPS_LATE TSRMLS_CC);
 
 	return SUCCESS;
 }
diff --git a/ext/db/adapter.c b/ext/db/adapter.c
index db0d4256961..1efb5a27df4 100644
--- a/ext/db/adapter.c
+++ b/ext/db/adapter.c
@@ -28,6 +28,8 @@
 #include "Zend/zend_exceptions.h"
 #include "Zend/zend_interfaces.h"
 
+#include "ext/pdo/php_pdo_driver.h"
+
 #include "kernel/main.h"
 #include "kernel/memory.h"
 
@@ -209,7 +211,7 @@ PHP_METHOD(Phalcon_Db_Adapter, fetchOne){
 	
 	if (!fetch_mode) {
 		PHALCON_INIT_VAR(fetch_mode);
-		ZVAL_LONG(fetch_mode, 2);
+		ZVAL_LONG(fetch_mode, PDO_FETCH_BOTH);
 	}
 	
 	if (!bind_params) {
@@ -271,7 +273,7 @@ PHP_METHOD(Phalcon_Db_Adapter, fetchAll){
 	
 	if (!fetch_mode) {
 		PHALCON_INIT_VAR(fetch_mode);
-		ZVAL_LONG(fetch_mode, 2);
+		ZVAL_LONG(fetch_mode, PDO_FETCH_BOTH);
 	}
 	
 	if (!bind_params) {
@@ -785,7 +787,7 @@ PHP_METHOD(Phalcon_Db_Adapter, tableExists){
 	phalcon_call_method_p2(sql, dialect, "tableexists", table_name, schema_name);
 	
 	PHALCON_INIT_VAR(fetch_num);
-	ZVAL_LONG(fetch_num, 3);
+	ZVAL_LONG(fetch_num, PDO_FETCH_NUM);
 	
 	PHALCON_INIT_VAR(num);
 	phalcon_call_method_p2(num, this_ptr, "fetchone", sql, fetch_num);
@@ -825,7 +827,7 @@ PHP_METHOD(Phalcon_Db_Adapter, viewExists){
 	phalcon_call_method_p2(sql, dialect, "viewexists", view_name, schema_name);
 	
 	PHALCON_INIT_VAR(fetch_num);
-	ZVAL_LONG(fetch_num, 3);
+	ZVAL_LONG(fetch_num, PDO_FETCH_NUM);
 	
 	PHALCON_INIT_VAR(num);
 	phalcon_call_method_p2(num, this_ptr, "fetchone", sql, fetch_num);
@@ -1303,7 +1305,7 @@ PHP_METHOD(Phalcon_Db_Adapter, listTables){
 	 * Use fetch Num
 	 */
 	PHALCON_INIT_VAR(fetch_num);
-	ZVAL_LONG(fetch_num, 3);
+	ZVAL_LONG(fetch_num, PDO_FETCH_NUM);
 	
 	/** 
 	 * Execute the SQL returning the tables
@@ -1367,7 +1369,7 @@ PHP_METHOD(Phalcon_Db_Adapter, listViews){
 	 * Use fetch Num
 	 */
 	PHALCON_INIT_VAR(fetch_num);
-	ZVAL_LONG(fetch_num, 3);
+	ZVAL_LONG(fetch_num, PDO_FETCH_NUM);
 	
 	/** 
 	 * Execute the SQL returning the tables
@@ -1427,7 +1429,7 @@ PHP_METHOD(Phalcon_Db_Adapter, describeIndexes){
 	 * We're using FETCH_NUM to fetch the columns
 	 */
 	PHALCON_INIT_VAR(fetch_num);
-	ZVAL_LONG(fetch_num, 3);
+	ZVAL_LONG(fetch_num, PDO_FETCH_NUM);
 	
 	/** 
 	 * Get the SQL required to describe indexes from the Dialect
@@ -1526,7 +1528,7 @@ PHP_METHOD(Phalcon_Db_Adapter, describeReferences){
 	 * We're using FETCH_NUM to fetch the columns
 	 */
 	PHALCON_INIT_VAR(fetch_num);
-	ZVAL_LONG(fetch_num, 3);
+	ZVAL_LONG(fetch_num, PDO_FETCH_NUM);
 	
 	/** 
 	 * Get the SQL required to describe the references from the Dialect
@@ -1651,7 +1653,7 @@ PHP_METHOD(Phalcon_Db_Adapter, tableOptions){
 	phalcon_call_method_p2(sql, dialect, "tableoptions", table_name, schema_name);
 	if (zend_is_true(sql)) {
 		PHALCON_INIT_VAR(fetch_assoc);
-		ZVAL_LONG(fetch_assoc, 1);
+		ZVAL_LONG(fetch_assoc, PDO_FETCH_ASSOC);
 	
 		PHALCON_INIT_VAR(describe);
 		phalcon_call_method_p2(describe, this_ptr, "fetchall", sql, fetch_assoc);
diff --git a/ext/db/adapter/pdo/mysql.c b/ext/db/adapter/pdo/mysql.c
index 8f99998aebf..0b7c3085639 100644
--- a/ext/db/adapter/pdo/mysql.c
+++ b/ext/db/adapter/pdo/mysql.c
@@ -29,6 +29,8 @@
 #include "Zend/zend_exceptions.h"
 #include "Zend/zend_interfaces.h"
 
+#include "ext/pdo/php_pdo_driver.h"
+
 #include "kernel/main.h"
 #include "kernel/memory.h"
 
@@ -156,7 +158,7 @@ PHP_METHOD(Phalcon_Db_Adapter_Pdo_Mysql, describeColumns){
 	 * We're using FETCH_NUM to fetch the columns
 	 */
 	PHALCON_INIT_VAR(fetch_num);
-	ZVAL_LONG(fetch_num, 3);
+	ZVAL_LONG(fetch_num, PDO_FETCH_NUM);
 	
 	/** 
 	 * Get the describe
diff --git a/ext/db/adapter/pdo/oracle.c b/ext/db/adapter/pdo/oracle.c
index 2c5e8054093..ef1d249d1a3 100644
--- a/ext/db/adapter/pdo/oracle.c
+++ b/ext/db/adapter/pdo/oracle.c
@@ -30,6 +30,8 @@
 #include "Zend/zend_exceptions.h"
 #include "Zend/zend_interfaces.h"
 
+#include "ext/pdo/php_pdo_driver.h"
+
 #include "kernel/main.h"
 #include "kernel/memory.h"
 
@@ -176,7 +178,7 @@ PHP_METHOD(Phalcon_Db_Adapter_Pdo_Oracle, describeColumns){
 	 * We're using FETCH_NUM to fetch the columns
 	 */
 	PHALCON_INIT_VAR(fetch_num);
-	ZVAL_LONG(fetch_num, 3);
+	ZVAL_LONG(fetch_num, PDO_FETCH_NUM);
 	
 	PHALCON_INIT_VAR(describe);
 	phalcon_call_method_p2(describe, this_ptr, "fetchall", sql, fetch_num);
@@ -345,7 +347,7 @@ PHP_METHOD(Phalcon_Db_Adapter_Pdo_Oracle, lastInsertId){
 	PHALCON_CONCAT_SVS(sql, "SELECT ", sequence_name, ".CURRVAL FROM dual");
 	
 	PHALCON_INIT_VAR(fetch_num);
-	ZVAL_LONG(fetch_num, 3);
+	ZVAL_LONG(fetch_num, PDO_FETCH_NUM);
 	
 	PHALCON_INIT_VAR(ret);
 	phalcon_call_method_p2(ret, this_ptr, "fetchall", sql, fetch_num);
diff --git a/ext/db/adapter/pdo/postgresql.c b/ext/db/adapter/pdo/postgresql.c
index 737ba636f61..ccd3358964b 100644
--- a/ext/db/adapter/pdo/postgresql.c
+++ b/ext/db/adapter/pdo/postgresql.c
@@ -30,6 +30,8 @@
 #include "Zend/zend_exceptions.h"
 #include "Zend/zend_interfaces.h"
 
+#include "ext/pdo/php_pdo_driver.h"
+
 #include "kernel/main.h"
 #include "kernel/memory.h"
 
@@ -163,7 +165,7 @@ PHP_METHOD(Phalcon_Db_Adapter_Pdo_Postgresql, describeColumns){
 	 * We're using FETCH_NUM to fetch the columns
 	 */
 	PHALCON_INIT_VAR(fetch_num);
-	ZVAL_LONG(fetch_num, 3);
+	ZVAL_LONG(fetch_num, PDO_FETCH_NUM);
 	
 	PHALCON_INIT_VAR(describe);
 	phalcon_call_method_p2(describe, this_ptr, "fetchall", sql, fetch_num);
diff --git a/ext/db/adapter/pdo/sqlite.c b/ext/db/adapter/pdo/sqlite.c
index 3c5a7706b37..093e86c8ff3 100644
--- a/ext/db/adapter/pdo/sqlite.c
+++ b/ext/db/adapter/pdo/sqlite.c
@@ -30,6 +30,8 @@
 #include "Zend/zend_exceptions.h"
 #include "Zend/zend_interfaces.h"
 
+#include "ext/pdo/php_pdo_driver.h"
+
 #include "kernel/main.h"
 #include "kernel/memory.h"
 
@@ -157,7 +159,7 @@ PHP_METHOD(Phalcon_Db_Adapter_Pdo_Sqlite, describeColumns){
 	 * We're using FETCH_NUM to fetch the columns
 	 */
 	PHALCON_INIT_VAR(fetch_num);
-	ZVAL_LONG(fetch_num, 3);
+	ZVAL_LONG(fetch_num, PDO_FETCH_NUM);
 	
 	PHALCON_INIT_VAR(describe);
 	phalcon_call_method_p2(describe, this_ptr, "fetchall", sql, fetch_num);
@@ -333,7 +335,7 @@ PHP_METHOD(Phalcon_Db_Adapter_Pdo_Sqlite, describeIndexes){
 	 * We're using FETCH_NUM to fetch the columns
 	 */
 	PHALCON_INIT_VAR(fetch_num);
-	ZVAL_LONG(fetch_num, 3);
+	ZVAL_LONG(fetch_num, PDO_FETCH_NUM);
 	
 	PHALCON_INIT_VAR(sql);
 	phalcon_call_method_p2(sql, dialect, "describeindexes", table, schema);
@@ -444,7 +446,7 @@ PHP_METHOD(Phalcon_Db_Adapter_Pdo_Sqlite, describeReferences){
 	 * We're using FETCH_NUM to fetch the columns
 	 */
 	PHALCON_INIT_VAR(fetch_num);
-	ZVAL_LONG(fetch_num, 3);
+	ZVAL_LONG(fetch_num, PDO_FETCH_NUM);
 	
 	/** 
 	 * Execute the SQL describing the references
diff --git a/ext/db/result/pdo.c b/ext/db/result/pdo.c
index 694eaea9ac4..ae81ac494d8 100644
--- a/ext/db/result/pdo.c
+++ b/ext/db/result/pdo.c
@@ -29,10 +29,10 @@
 #include "Zend/zend_exceptions.h"
 #include "Zend/zend_interfaces.h"
 
+#include "ext/pdo/php_pdo_driver.h"
+
 #include "kernel/main.h"
 #include "kernel/memory.h"
-
-#include "ext/pdo/php_pdo_driver.h"
 #include "kernel/exception.h"
 #include "kernel/object.h"
 #include "kernel/fcall.h"
@@ -65,7 +65,7 @@ PHALCON_INIT_CLASS(Phalcon_Db_Result_Pdo){
 
 	zend_declare_property_null(phalcon_db_result_pdo_ce, SL("_connection"), ZEND_ACC_PROTECTED TSRMLS_CC);
 	zend_declare_property_null(phalcon_db_result_pdo_ce, SL("_result"), ZEND_ACC_PROTECTED TSRMLS_CC);
-	zend_declare_property_long(phalcon_db_result_pdo_ce, SL("_fetchMode"), 4, ZEND_ACC_PROTECTED TSRMLS_CC);
+	zend_declare_property_long(phalcon_db_result_pdo_ce, SL("_fetchMode"), PDO_FETCH_OBJ, ZEND_ACC_PROTECTED TSRMLS_CC);
 	zend_declare_property_null(phalcon_db_result_pdo_ce, SL("_pdoStatement"), ZEND_ACC_PROTECTED TSRMLS_CC);
 	zend_declare_property_null(phalcon_db_result_pdo_ce, SL("_sqlStatement"), ZEND_ACC_PROTECTED TSRMLS_CC);
 	zend_declare_property_null(phalcon_db_result_pdo_ce, SL("_bindParams"), ZEND_ACC_PROTECTED TSRMLS_CC);
@@ -450,20 +450,10 @@ PHP_METHOD(Phalcon_Db_Result_Pdo, setFetchMode){
 	}
 
 	PHALCON_INIT_VAR(fetch_type);
+	ZVAL_LONG(fetch_type, fetch_mode);
 
 	PHALCON_OBS_VAR(pdo_statement);
 	phalcon_read_property(&pdo_statement, this_ptr, SL("_pdoStatement"), PH_NOISY_CC);
-	if (fetch_mode == 1) {
-		ZVAL_LONG(fetch_type, 2);
-	} else if (fetch_mode == 2) {
-		ZVAL_LONG(fetch_type, 4);
-	} else if (fetch_mode == 3) {
-		ZVAL_LONG(fetch_type, 3);
-	} else if (fetch_mode == 4) {
-		ZVAL_LONG(fetch_type, 5);
-	} else {
-		ZVAL_LONG(fetch_type, 0);
-	}
 
 	if (Z_LVAL_P(fetch_type) != 0) {
 		phalcon_call_method_p1_noret(pdo_statement, "setfetchmode", fetch_type);
diff --git a/ext/mvc/model.c b/ext/mvc/model.c
index 4a93ed76051..72f5e1eaf8d 100644
--- a/ext/mvc/model.c
+++ b/ext/mvc/model.c
@@ -29,9 +29,10 @@
 #include "Zend/zend_exceptions.h"
 #include "Zend/zend_interfaces.h"
 
+#include "ext/pdo/php_pdo_driver.h"
+
 #include "kernel/main.h"
 #include "kernel/memory.h"
-
 #include "kernel/fcall.h"
 #include "kernel/exception.h"
 #include "kernel/object.h"
@@ -4919,7 +4920,7 @@ PHP_METHOD(Phalcon_Mvc_Model, refresh){
 	phalcon_call_method_p1(sql, dialect, "select", select);
 	
 	PHALCON_INIT_VAR(fetch_type);
-	ZVAL_LONG(fetch_type, 1);
+	ZVAL_LONG(fetch_type, PDO_FETCH_ASSOC);
 	
 	PHALCON_INIT_VAR(row);
 	phalcon_call_method_p4(row, read_connection, "fetchone", sql, fetch_type, unique_params, unique_types);
diff --git a/ext/mvc/model/resultset/complex.c b/ext/mvc/model/resultset/complex.c
index b7df88528fd..ac9e66522d5 100644
--- a/ext/mvc/model/resultset/complex.c
+++ b/ext/mvc/model/resultset/complex.c
@@ -29,6 +29,8 @@
 #include "Zend/zend_exceptions.h"
 #include "Zend/zend_interfaces.h"
 
+#include "ext/pdo/php_pdo_driver.h"
+
 #include "kernel/main.h"
 #include "kernel/memory.h"
 
@@ -111,7 +113,7 @@ PHP_METHOD(Phalcon_Mvc_Model_Resultset_Complex, __construct){
 	 */
 	if (Z_TYPE_P(result) == IS_OBJECT) {
 		PHALCON_INIT_VAR(fetch_assoc);
-		ZVAL_LONG(fetch_assoc, 1);
+		ZVAL_LONG(fetch_assoc, PDO_FETCH_ASSOC);
 		phalcon_call_method_p1_noret(result, "setfetchmode", fetch_assoc);
 	}
 	
diff --git a/ext/mvc/model/resultset/simple.c b/ext/mvc/model/resultset/simple.c
index 2494b40f147..6f7983dd216 100644
--- a/ext/mvc/model/resultset/simple.c
+++ b/ext/mvc/model/resultset/simple.c
@@ -28,6 +28,8 @@
 #include "Zend/zend_exceptions.h"
 #include "Zend/zend_interfaces.h"
 
+#include "ext/pdo/php_pdo_driver.h"
+
 #include "kernel/main.h"
 #include "kernel/memory.h"
 
@@ -102,7 +104,7 @@ PHP_METHOD(Phalcon_Mvc_Model_Resultset_Simple, __construct){
 	 * Use only fetch assoc
 	 */
 	PHALCON_INIT_VAR(fetch_assoc);
-	ZVAL_LONG(fetch_assoc, 1);
+	ZVAL_LONG(fetch_assoc, PDO_FETCH_ASSOC);
 	phalcon_call_method_p1_noret(result, "setfetchmode", fetch_assoc);
 	
 	PHALCON_INIT_VAR(limit);