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-rw-r--r--system/database/drivers/pdo/pdo_driver.php62
1 files changed, 39 insertions, 23 deletions
diff --git a/system/database/drivers/pdo/pdo_driver.php b/system/database/drivers/pdo/pdo_driver.php
index 32a9e7509..923f0e125 100644
--- a/system/database/drivers/pdo/pdo_driver.php
+++ b/system/database/drivers/pdo/pdo_driver.php
@@ -1,4 +1,4 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php
/**
* CodeIgniter
*
@@ -24,6 +24,7 @@
* @since Version 2.1.0
* @filesource
*/
+defined('BASEPATH') OR exit('No direct script access allowed');
/**
* PDO Database Adapter Class
@@ -40,22 +41,33 @@
*/
class CI_DB_pdo_driver extends CI_DB {
+ /**
+ * Database driver
+ *
+ * @var string
+ */
public $dbdriver = 'pdo';
- // The character used to escaping
- protected $_escape_char = '"';
-
- protected $_random_keyword;
-
+ /**
+ * Transaction enabled flag
+ *
+ * @var bool
+ */
public $trans_enabled = FALSE;
- // need to track the PDO options
+ /**
+ * PDO Options
+ *
+ * @var array
+ */
public $options = array();
+ // --------------------------------------------------------------------
+
/**
- * Constructor
+ * Class constructor
*
- * Validates the DSN string and/or detects the subdriver
+ * Validates the DSN string and/or detects the subdriver.
*
* @param array $params
* @return void
@@ -103,9 +115,9 @@ class CI_DB_pdo_driver extends CI_DB {
// --------------------------------------------------------------------
/**
- * Non-persistent database connection
+ * Database connection
*
- * @param bool
+ * @param bool $persistent
* @return object
*/
public function db_connect($persistent = FALSE)
@@ -153,6 +165,10 @@ class CI_DB_pdo_driver extends CI_DB {
{
return $this->data_cache['version'];
}
+ elseif ( ! $this->conn_id)
+ {
+ $this->initialize();
+ }
// Not all subdrivers support the getAttribute() method
try
@@ -170,7 +186,7 @@ class CI_DB_pdo_driver extends CI_DB {
/**
* Execute the query
*
- * @param string an SQL query
+ * @param string $sql SQL query
* @return mixed
*/
protected function _execute($sql)
@@ -183,7 +199,7 @@ class CI_DB_pdo_driver extends CI_DB {
/**
* Begin Transaction
*
- * @param bool $test_mode = FALSE
+ * @param bool $test_mode
* @return bool
*/
public function trans_begin($test_mode = FALSE)
@@ -243,8 +259,8 @@ class CI_DB_pdo_driver extends CI_DB {
/**
* Escape String
*
- * @param string
- * @param bool whether or not the string will be used in a LIKE condition
+ * @param string $str
+ * @param bool $like Whether or not the string will be used in a LIKE condition
* @return string
*/
public function escape_str($str, $like = FALSE)
@@ -296,7 +312,7 @@ class CI_DB_pdo_driver extends CI_DB {
/**
* Insert ID
*
- * @param string
+ * @param string $name
* @return int
*/
public function insert_id($name = NULL)
@@ -311,7 +327,7 @@ class CI_DB_pdo_driver extends CI_DB {
*
* Generates a platform-specific query so that the column data can be retrieved
*
- * @param string the table name
+ * @param string $table
* @return string
*/
protected function _field_data($table)
@@ -355,9 +371,9 @@ class CI_DB_pdo_driver extends CI_DB {
*
* Generates a platform-specific batch update string from the supplied data
*
- * @param string the table name
- * @param array the update data
- * @param string the where key
+ * @param string $table Table name
+ * @param array $values Update data
+ * @param string $index WHERE key
* @return string
*/
protected function _update_batch($table, $values, $index)
@@ -401,10 +417,10 @@ class CI_DB_pdo_driver extends CI_DB {
*
* Generates a platform-specific truncate string from the supplied data
*
- * If the database does not support the truncate() command,
+ * If the database does not support the TRUNCATE statement,
* then this method maps to 'DELETE FROM table'
*
- * @param string the table name
+ * @param string $table
* @return string
*/
protected function _truncate($table)
@@ -415,4 +431,4 @@ class CI_DB_pdo_driver extends CI_DB {
}
/* End of file pdo_driver.php */
-/* Location: ./system/database/drivers/pdo/pdo_driver.php */
+/* Location: ./system/database/drivers/pdo/pdo_driver.php */ \ No newline at end of file