Uppercasing some stray lowercase keywords for code consistency
diff --git a/system/database/drivers/odbc/odbc_result.php b/system/database/drivers/odbc/odbc_result.php
index a81a2b8..5d64a46 100644
--- a/system/database/drivers/odbc/odbc_result.php
+++ b/system/database/drivers/odbc/odbc_result.php
@@ -188,7 +188,7 @@
 	 */
 	function _odbc_fetch_object(& $odbc_result) {
 		$rs = array();
-		$rs_obj = false;
+		$rs_obj = FALSE;
 		if (odbc_fetch_into($odbc_result, $rs)) {
 			foreach ($rs as $k=>$v) {
 				$field_name= odbc_field_name($odbc_result, $k+1);
@@ -210,7 +210,7 @@
 	 */
 	function _odbc_fetch_array(& $odbc_result) {
 		$rs = array();
-		$rs_assoc = false;
+		$rs_assoc = FALSE;
 		if (odbc_fetch_into($odbc_result, $rs)) {
 			$rs_assoc=array();
 			foreach ($rs as $k=>$v) {
diff --git a/system/database/drivers/postgre/postgre_driver.php b/system/database/drivers/postgre/postgre_driver.php
index 0bb7974..81ca6e0 100644
--- a/system/database/drivers/postgre/postgre_driver.php
+++ b/system/database/drivers/postgre/postgre_driver.php
@@ -330,21 +330,21 @@
 		$v = $this->_version();
 		$v = $v['server'];
 
-		$table	= func_num_args() > 0 ? func_get_arg(0) : null;
-		$column	= func_num_args() > 1 ? func_get_arg(1) : null;
+		$table	= func_num_args() > 0 ? func_get_arg(0) : NULL;
+		$column	= func_num_args() > 1 ? func_get_arg(1) : NULL;
 
-		if ($table == null && $v >= '8.1')
+		if ($table == NULL && $v >= '8.1')
 		{
 			$sql='SELECT LASTVAL() as ins_id';
 		}
-		elseif ($table != null && $column != null && $v >= '8.0')
+		elseif ($table != NULL && $column != NULL && $v >= '8.0')
 		{
 			$sql = sprintf("SELECT pg_get_serial_sequence('%s','%s') as seq", $table, $column);
 			$query = $this->query($sql);
 			$row = $query->row();
 			$sql = sprintf("SELECT CURRVAL('%s') as ins_id", $row->seq);
 		}
-		elseif ($table != null)
+		elseif ($table != NULL)
 		{
 			// seq_name passed in table parameter
 			$sql = sprintf("SELECT CURRVAL('%s') as ins_id", $table);