5 files changed, 13 insertions, 11 deletions

diff --git a/system/codeigniter/Common.php b/system/codeigniter/Common.php
index 4879e7099..d5bec77fe 100644
--- a/system/codeigniter/Common.php
+++ b/system/codeigniter/Common.php
@@ -153,8 +153,10 @@ function show_404($page = '')
 * @access	public
 * @return	void
 */
-function log_message($level = 2, $message, $php_error = FALSE)
+function log_message($level = 'error', $message, $php_error = FALSE)
 {
+	static $LOG;
+	
 	$config =& _get_config();
 	if ($config['log_errors'] === FALSE)
 	{
@@ -166,7 +168,7 @@ function log_message($level = 2, $message, $php_error = FALSE)
 		include_once(BASEPATH.'libraries/Log.php');		
 	}
 	
-	if ( ! isset($LOG))
+	if ( ! is_object($LOG))
 	{
 		$LOG = new CI_Log(
 							$config['log_path'], 
diff --git a/system/drivers/DB_active_record.php b/system/drivers/DB_active_record.php
index 373c0f626..f1995c807 100644
--- a/system/drivers/DB_active_record.php
+++ b/system/drivers/DB_active_record.php
@@ -663,7 +663,7 @@ class CI_DB_active_record extends CI_DB_driver {
 
 		if (count($this->ar_where) == 0)
 		{
-            if ($this->debug)
+            if ($this->db_debug)
             {
 				return $this->display_error('db_del_must_use_where');
             }
diff --git a/system/drivers/DB_driver.php b/system/drivers/DB_driver.php
index ed18d54e5..3a2a5e9bc 100644
--- a/system/drivers/DB_driver.php
+++ b/system/drivers/DB_driver.php
@@ -86,7 +86,7 @@ class CI_DB_driver {
 			{
 				log_message('error', 'Invalid DB Connection String');
 			
-				if ($this->debug)
+				if ($this->db_debug)
 				{
 					return $this->display_error('db_invalid_connection_str');
 				}
@@ -265,7 +265,7 @@ class CI_DB_driver {
 		
 		if ( ! function_exists($function))
 		{ 
-			if ($this->debug)
+			if ($this->db_debug)
 			{
 				return $this->display_error('db_unsupported_function');
 			}
@@ -425,7 +425,7 @@ class CI_DB_driver {
     {
     	if ($table == '')
     	{
-			if ($this->debug)
+			if ($this->db_debug)
 			{
 				return $this->display_error('db_field_param_missing');
 			}
@@ -472,7 +472,7 @@ class CI_DB_driver {
 	{
     	if ($table == '')
     	{
-			if ($this->debug)
+			if ($this->db_debug)
 			{
 				return $this->display_error('db_field_param_missing');
 			}
@@ -535,7 +535,7 @@ class CI_DB_driver {
 			// Just in case the replacement string contains the bind
 			// character we'll temporarily replace it with a marker
 			$val = str_replace($this->bind_marker, '{%bind_marker%}', $val);
-			$sql = preg_replace("#".preg_quote($this->bind_marker)."#", $val, $sql, 1);
+			$sql = preg_replace("#".preg_quote($this->bind_marker, '#')."#", str_replace('$', '\$', $val), $sql, 1);
 		}
 
 		return str_replace('{%bind_marker%}', $this->bind_marker, $sql);		
diff --git a/system/helpers/form_helper.php b/system/helpers/form_helper.php
index 069101063..eb97913f1 100644
--- a/system/helpers/form_helper.php
+++ b/system/helpers/form_helper.php
@@ -247,7 +247,7 @@ function form_checkbox($data = '', $value = '', $checked = TRUE, $extra = '')
 {
 	$defaults = array('type' => 'checkbox', 'name' => (( ! is_array($data)) ? $data : ''), 'value' => $value);
 	
-	if (isset($data['checked']))
+	if (is_array($data) AND array_key_exists('checked', $data))
 	{
 		$checked = $data['checked'];
 		
@@ -256,7 +256,7 @@ function form_checkbox($data = '', $value = '', $checked = TRUE, $extra = '')
 	}
 	
 	if ($checked == TRUE)
-		$defaults['checked'] = ' checked="checked"';
+		$defaults['checked'] = 'checked';
 	else
 		unset($defaults['checked']);
 
diff --git a/system/libraries/Log.php b/system/libraries/Log.php
index 17b96b2c2..de5a9b836 100644
--- a/system/libraries/Log.php
+++ b/system/libraries/Log.php
@@ -40,7 +40,7 @@ class CI_Log {
 	 * @param	string	the error threshold
 	 * @param	string	the date formatting codes
 	 */
-	function CI_Log($path = '', $threshold = '', $date_fmt = '')
+	function CI_Log($path = '', $threshold = 4, $date_fmt = '')
 	{	
 		$this->log_path = ($path != '') ? $path : BASEPATH.'logs/';