Merge branch 'develop' into feature/db_toString_support

1 files changed, 183 insertions, 201 deletions

diff --git a/system/libraries/Form_validation.php b/system/libraries/Form_validation.php
index 918f6904c..9491f354c 100644
--- a/system/libraries/Form_validation.php
+++ b/system/libraries/Form_validation.php
@@ -1,8 +1,8 @@
-<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -47,14 +47,24 @@ class CI_Form_validation {
 	protected $_error_suffix		= '</p>';
 	protected $error_string			= '';
 	protected $_safe_form_data		= FALSE;
+	protected $validation_data		= array();
 
-	/**
-	 * Constructor
-	 */
 	public function __construct($rules = array())
 	{
 		$this->CI =& get_instance();
 
+		// applies delimiters set in config file.
+		if (isset($rules['error_prefix']))
+		{
+			$this->_error_prefix = $rules['error_prefix'];
+			unset($rules['error_prefix']);
+		}
+		if (isset($rules['error_suffix']))
+		{
+			$this->_error_suffix = $rules['error_suffix'];
+			unset($rules['error_suffix']);
+		}
+		
 		// Validation rules can be stored in a config file.
 		$this->_config_rules = $rules;
 
@@ -62,12 +72,12 @@ class CI_Form_validation {
 		$this->CI->load->helper('form');
 
 		// Set the character encoding in MB.
-		if (function_exists('mb_internal_encoding'))
+		if (MB_ENABLED === TRUE)
 		{
 			mb_internal_encoding($this->CI->config->item('charset'));
 		}
 
-		log_message('debug', "Form Validation Class Initialized");
+		log_message('debug', 'Form Validation Class Initialized');
 	}
 
 	// --------------------------------------------------------------------
@@ -78,7 +88,6 @@ class CI_Form_validation {
 	 * This function takes an array of field names and validation
 	 * rules as input, validates the info, and stores it
 	 *
-	 * @access	public
 	 * @param	mixed
 	 * @param	string
 	 * @return	void
@@ -86,7 +95,8 @@ class CI_Form_validation {
 	public function set_rules($field, $label = '', $rules = '')
 	{
 		// No reason to set rules if we have no POST data
-		if (count($_POST) == 0)
+		// or a validation array has not been specified
+		if ($this->CI->input->method() !== 'post' && empty($this->validation_data))
 		{
 			return $this;
 		}
@@ -113,7 +123,7 @@ class CI_Form_validation {
 		}
 
 		// No fields? Nothing to do...
-		if ( ! is_string($field) OR  ! is_string($rules) OR $field == '')
+		if ( ! is_string($field) OR ! is_string($rules) OR $field == '')
 		{
 			return $this;
 		}
@@ -121,21 +131,20 @@ class CI_Form_validation {
 		// If the field label wasn't passed we use the field name
 		$label = ($label == '') ? $field : $label;
 
-		// Is the field name an array?  We test for the existence of a bracket "[" in
-		// the field name to determine this.  If it is an array, we break it apart
+		// Is the field name an array? If it is an array, we break it apart
 		// into its components so that we can fetch the corresponding POST data later
-		if (strpos($field, '[') !== FALSE AND preg_match_all('/\[(.*?)\]/', $field, $matches))
+		if (preg_match_all('/\[(.*?)\]/', $field, $matches))
 		{
 			// Note: Due to a bug in current() that affects some versions
 			// of PHP we can not pass function call directly into it
 			$x = explode('[', $field);
 			$indexes[] = current($x);
 
-			for ($i = 0; $i < count($matches['0']); $i++)
+			for ($i = 0, $c = count($matches[0]); $i < $c; $i++)
 			{
-				if ($matches['1'][$i] != '')
+				if ($matches[1][$i] != '')
 				{
-					$indexes[] = $matches['1'][$i];
+					$indexes[] = $matches[1][$i];
 				}
 			}
 
@@ -164,12 +173,34 @@ class CI_Form_validation {
 	// --------------------------------------------------------------------
 
 	/**
+	 * By default, form validation uses the $_POST array to validate
+	 *
+	 * If an array is set through this method, then this array will
+	 * be used instead of the $_POST array
+	 *
+	 * Note that if you are validating multiple arrays, then the
+	 * reset_validation() function should be called after validating
+	 * each array due to the limitations of CI's singleton
+	 *
+	 * @param	array	$data
+	 * @return	void
+	 */
+	public function set_data($data = '')
+	{
+		if ( ! empty($data) && is_array($data))
+		{
+			$this->validation_data = $data;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
 	 * Set Error Message
 	 *
 	 * Lets users set their own error messages on the fly.  Note:  The key
-	 * name has to match the  function name that it corresponds to.
+	 * name has to match the function name that it corresponds to.
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	string
 	 * @return	string
@@ -193,7 +224,6 @@ class CI_Form_validation {
 	 *
 	 * Permits a prefix/suffix to be added to each error message
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	string
 	 * @return	void
@@ -213,7 +243,6 @@ class CI_Form_validation {
 	 *
 	 * Gets the error message associated with a particular field
 	 *
-	 * @access	public
 	 * @param	string	the field name
 	 * @return	void
 	 */
@@ -240,11 +269,24 @@ class CI_Form_validation {
 	// --------------------------------------------------------------------
 
 	/**
+	 * Get Array of Error Messages
+	 *
+	 * Returns the error messages as an array
+	 *
+	 * @return	array
+	 */
+	public function error_array()
+	{
+		return $this->_error_array;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
 	 * Error String
 	 *
 	 * Returns the error messages as a string, wrapped in the error delimiters
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	string
 	 * @return	str
@@ -287,23 +329,23 @@ class CI_Form_validation {
 	 *
 	 * This function does all the work.
 	 *
-	 * @access	public
 	 * @return	bool
 	 */
 	public function run($group = '')
 	{
 		// Do we even have any data to process?  Mm?
-		if (count($_POST) == 0)
+		$validation_array = ( ! empty($this->validation_data)) ? $this->validation_data : $_POST;
+		if (count($validation_array) === 0)
 		{
 			return FALSE;
 		}
 
 		// Does the _field_data array containing the validation rules exist?
 		// If not, we look to see if they were assigned via a config file
-		if (count($this->_field_data) == 0)
+		if (count($this->_field_data) === 0)
 		{
 			// No validation rules?  We're done...
-			if (count($this->_config_rules) == 0)
+			if (count($this->_config_rules) === 0)
 			{
 				return FALSE;
 			}
@@ -321,7 +363,7 @@ class CI_Form_validation {
 			}
 
 			// We're we able to set the rules correctly?
-			if (count($this->_field_data) == 0)
+			if (count($this->_field_data) === 0)
 			{
 				log_message('debug', "Unable to find validation rules");
 				return FALSE;
@@ -335,18 +377,18 @@ class CI_Form_validation {
 		// corresponding $_POST item and test for errors
 		foreach ($this->_field_data as $field => $row)
 		{
-			// Fetch the data from the corresponding $_POST array and cache it in the _field_data array.
+			// Fetch the data from the corresponding $_POST or validation array and cache it in the _field_data array.
 			// Depending on whether the field name is an array or a string will determine where we get it from.
 
-			if ($row['is_array'] == TRUE)
+			if ($row['is_array'] === TRUE)
 			{
-				$this->_field_data[$field]['postdata'] = $this->_reduce_array($_POST, $row['keys']);
+				$this->_field_data[$field]['postdata'] = $this->_reduce_array($validation_array, $row['keys']);
 			}
 			else
 			{
-				if (isset($_POST[$field]) AND $_POST[$field] != "")
+				if (isset($validation_array[$field]) AND $validation_array[$field] != "")
 				{
-					$this->_field_data[$field]['postdata'] = $_POST[$field];
+					$this->_field_data[$field]['postdata'] = $validation_array[$field];
 				}
 			}
 
@@ -364,14 +406,7 @@ class CI_Form_validation {
 		// Now we need to re-set the POST data with the new, processed data
 		$this->_reset_post_array();
 
-		// No errors, validation passes!
-		if ($total_errors == 0)
-		{
-			return TRUE;
-		}
-
-		// Validation fails
-		return FALSE;
+		return ($total_errors === 0);
 	}
 
 	// --------------------------------------------------------------------
@@ -379,7 +414,6 @@ class CI_Form_validation {
 	/**
 	 * Traverse a multidimensional $_POST array index until the data is found
 	 *
-	 * @access	private
 	 * @param	array
 	 * @param	array
 	 * @param	integer
@@ -387,23 +421,9 @@ class CI_Form_validation {
 	 */
 	protected function _reduce_array($array, $keys, $i = 0)
 	{
-		if (is_array($array))
+		if (is_array($array) && isset($keys[$i]))
 		{
-			if (isset($keys[$i]))
-			{
-				if (isset($array[$keys[$i]]))
-				{
-					$array = $this->_reduce_array($array[$keys[$i]], $keys, ($i+1));
-				}
-				else
-				{
-					return NULL;
-				}
-			}
-			else
-			{
-				return $array;
-			}
+			return isset($array[$keys[$i]]) ? $this->_reduce_array($array[$keys[$i]], $keys, ($i+1)) : NULL;
 		}
 
 		return $array;
@@ -414,7 +434,6 @@ class CI_Form_validation {
 	/**
 	 * Re-populate the _POST array with our finalized and processed data
 	 *
-	 * @access	private
 	 * @return	null
 	 */
 	protected function _reset_post_array()
@@ -423,7 +442,7 @@ class CI_Form_validation {
 		{
 			if ( ! is_null($row['postdata']))
 			{
-				if ($row['is_array'] == FALSE)
+				if ($row['is_array'] === FALSE)
 				{
 					if (isset($_POST[$row['field']]))
 					{
@@ -436,7 +455,7 @@ class CI_Form_validation {
 					$post_ref =& $_POST;
 
 					// before we assign values, make a reference to the right POST key
-					if (count($row['keys']) == 1)
+					if (count($row['keys']) === 1)
 					{
 						$post_ref =& $post_ref[current($row['keys'])];
 					}
@@ -472,7 +491,6 @@ class CI_Form_validation {
 	/**
 	 * Executes the Validation routines
 	 *
-	 * @access	private
 	 * @param	array
 	 * @param	array
 	 * @param	mixed
@@ -514,7 +532,7 @@ class CI_Form_validation {
 		// --------------------------------------------------------------------
 
 		// Isset Test. Typically this rule will only apply to checkboxes.
-		if (is_null($postdata) AND $callback == FALSE)
+		if (is_null($postdata) AND $callback === FALSE)
 		{
 			if (in_array('isset', $rules, TRUE) OR in_array('required', $rules))
 			{
@@ -605,7 +623,7 @@ class CI_Form_validation {
 				$result = $this->CI->$rule($postdata, $param);
 
 				// Re-assign the result to the master data array
-				if ($_in_array == TRUE)
+				if ($_in_array === TRUE)
 				{
 					$this->_field_data[$row['field']]['postdata'][$cycles] = (is_bool($result)) ? $postdata : $result;
 				}
@@ -630,7 +648,7 @@ class CI_Form_validation {
 					{
 						$result = $rule($postdata);
 
-						if ($_in_array == TRUE)
+						if ($_in_array === TRUE)
 						{
 							$this->_field_data[$row['field']]['postdata'][$cycles] = (is_bool($result)) ? $postdata : $result;
 						}
@@ -649,7 +667,7 @@ class CI_Form_validation {
 
 				$result = $this->$rule($postdata, $param);
 
-				if ($_in_array == TRUE)
+				if ($_in_array === TRUE)
 				{
 					$this->_field_data[$row['field']]['postdata'][$cycles] = (is_bool($result)) ? $postdata : $result;
 				}
@@ -676,7 +694,7 @@ class CI_Form_validation {
 
 				// Is the parameter we are inserting into the error message the name
 				// of another field?  If so we need to grab its "field label"
-				if (isset($this->_field_data[$param]) AND isset($this->_field_data[$param]['label']))
+				if (isset($this->_field_data[$param], $this->_field_data[$param]['label']))
 				{
 					$param = $this->_translate_fieldname($this->_field_data[$param]['label']);
 				}
@@ -702,7 +720,6 @@ class CI_Form_validation {
 	/**
 	 * Translate a field name
 	 *
-	 * @access	private
 	 * @param	string	the field name
 	 * @return	string
 	 */
@@ -710,7 +727,7 @@ class CI_Form_validation {
 	{
 		// Do we need to translate the field name?
 		// We look for the prefix lang: to determine this
-		if (substr($fieldname, 0, 5) == 'lang:')
+		if (substr($fieldname, 0, 5) === 'lang:')
 		{
 			// Grab the variable
 			$line = substr($fieldname, 5);
@@ -733,20 +750,19 @@ class CI_Form_validation {
 	 * Permits you to repopulate a form field with the value it was submitted
 	 * with, or, if that value doesn't exist, with the default
 	 *
-	 * @access	public
 	 * @param	string	the field name
 	 * @param	string
-	 * @return	void
+	 * @return	string
 	 */
 	public function set_value($field = '', $default = '')
 	{
-		if ( ! isset($this->_field_data[$field]))
+		if ( ! isset($this->_field_data[$field], $this->_field_data[$field]['postdata']))
 		{
 			return $default;
 		}
 
 		// If the data is an array output them one at a time.
-		//     E.g: form_input('name[]', set_value('name[]');
+		//	E.g: form_input('name[]', set_value('name[]');
 		if (is_array($this->_field_data[$field]['postdata']))
 		{
 			return array_shift($this->_field_data[$field]['postdata']);
@@ -763,20 +779,15 @@ class CI_Form_validation {
 	 * Enables pull-down lists to be set to the value the user
 	 * selected in the event of an error
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	string
 	 * @return	string
 	 */
 	public function set_select($field = '', $value = '', $default = FALSE)
 	{
-		if ( ! isset($this->_field_data[$field]) OR ! isset($this->_field_data[$field]['postdata']))
+		if ( ! isset($this->_field_data[$field], $this->_field_data[$field]['postdata']))
 		{
-			if ($default === TRUE AND count($this->_field_data) === 0)
-			{
-				return ' selected="selected"';
-			}
-			return '';
+			return ($default === TRUE && count($this->_field_data) === 0) ? ' selected="selected"' : '';
 		}
 
 		$field = $this->_field_data[$field]['postdata'];
@@ -788,12 +799,9 @@ class CI_Form_validation {
 				return '';
 			}
 		}
-		else
+		elseif (($field == '' OR $value == '') OR ($field != $value))
 		{
-			if (($field == '' OR $value == '') OR ($field != $value))
-			{
-				return '';
-			}
+			return '';
 		}
 
 		return ' selected="selected"';
@@ -807,20 +815,15 @@ class CI_Form_validation {
 	 * Enables radio buttons to be set to the value the user
 	 * selected in the event of an error
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	string
 	 * @return	string
 	 */
 	public function set_radio($field = '', $value = '', $default = FALSE)
 	{
-		if ( ! isset($this->_field_data[$field]) OR ! isset($this->_field_data[$field]['postdata']))
+		if ( ! isset($this->_field_data[$field], $this->_field_data[$field]['postdata']))
 		{
-			if ($default === TRUE AND count($this->_field_data) === 0)
-			{
-				return ' checked="checked"';
-			}
-			return '';
+			return ($default === TRUE && count($this->_field_data) === 0) ? ' checked="checked"' : '';
 		}
 
 		$field = $this->_field_data[$field]['postdata'];
@@ -851,40 +854,14 @@ class CI_Form_validation {
 	 * Enables checkboxes to be set to the value the user
 	 * selected in the event of an error
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	string
 	 * @return	string
 	 */
 	public function set_checkbox($field = '', $value = '', $default = FALSE)
 	{
-		if ( ! isset($this->_field_data[$field]) OR ! isset($this->_field_data[$field]['postdata']))
-		{
-			if ($default === TRUE AND count($this->_field_data) === 0)
-			{
-				return ' checked="checked"';
-			}
-			return '';
-		}
-
-		$field = $this->_field_data[$field]['postdata'];
-
-		if (is_array($field))
-		{
-			if ( ! in_array($value, $field))
-			{
-				return '';
-			}
-		}
-		else
-		{
-			if (($field == '' OR $value == '') OR ($field != $value))
-			{
-				return '';
-			}
-		}
-
-		return ' checked="checked"';
+		// Logic is exactly the same as for radio fields
+		return $this->set_radio($field, $value, $default);
 	}
 
 	// --------------------------------------------------------------------
@@ -892,20 +869,12 @@ class CI_Form_validation {
 	/**
 	 * Required
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
 	public function required($str)
 	{
-		if ( ! is_array($str))
-		{
-			return (trim($str) == '') ? FALSE : TRUE;
-		}
-		else
-		{
-			return ( ! empty($str));
-		}
+		return ( ! is_array($str)) ? (trim($str) !== '') : ( ! empty($str));
 	}
 
 	// --------------------------------------------------------------------
@@ -913,19 +882,13 @@ class CI_Form_validation {
 	/**
 	 * Performs a Regular Expression match test.
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	regex
 	 * @return	bool
 	 */
 	public function regex_match($str, $regex)
 	{
-		if ( ! preg_match($regex, $str))
-		{
-			return FALSE;
-		}
-
-		return  TRUE;
+		return (bool) preg_match($regex, $str);
 	}
 
 	// --------------------------------------------------------------------
@@ -933,29 +896,29 @@ class CI_Form_validation {
 	/**
 	 * Match one field to another
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	field
 	 * @return	bool
 	 */
 	public function matches($str, $field)
 	{
-		if ( ! isset($_POST[$field]))
+		$validation_array = ( ! empty($this->validation_data)) ? $this->validation_data : $_POST;
+		if ( ! isset($validation_array[$field]))
 		{
 			return FALSE;
 		}
 
-		$field = $_POST[$field];
-
-		return ($str !== $field) ? FALSE : TRUE;
+		return ($str === $validation_array[$field]);
 	}
 
 	// --------------------------------------------------------------------
 
 	/**
-	 * Match one field to another
+	 * Is Unique
+	 *
+	 * Check if the input value doesn't already exist
+	 * in the specified database field.
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	field
 	 * @return	bool
@@ -969,31 +932,30 @@ class CI_Form_validation {
 			return $query->num_rows() === 0;
 		}
 		return FALSE;
-    }
+	}
 
 	// --------------------------------------------------------------------
 
 	/**
 	 * Minimum Length
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	value
 	 * @return	bool
 	 */
 	public function min_length($str, $val)
 	{
-		if (preg_match("/[^0-9]/", $val))
+		if (preg_match('/[^0-9]/', $val))
 		{
 			return FALSE;
 		}
 
-		if (function_exists('mb_strlen'))
+		if (MB_ENABLED === TRUE)
 		{
-			return (mb_strlen($str) < $val) ? FALSE : TRUE;
+			return ! (mb_strlen($str) < $val);
 		}
 
-		return (strlen($str) < $val) ? FALSE : TRUE;
+		return ! (strlen($str) < $val);
 	}
 
 	// --------------------------------------------------------------------
@@ -1001,24 +963,23 @@ class CI_Form_validation {
 	/**
 	 * Max Length
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	value
 	 * @return	bool
 	 */
 	public function max_length($str, $val)
 	{
-		if (preg_match("/[^0-9]/", $val))
+		if (preg_match('/[^0-9]/', $val))
 		{
 			return FALSE;
 		}
 
-		if (function_exists('mb_strlen'))
+		if (MB_ENABLED === TRUE)
 		{
-			return (mb_strlen($str) > $val) ? FALSE : TRUE;
+			return ! (mb_strlen($str) > $val);
 		}
 
-		return (strlen($str) > $val) ? FALSE : TRUE;
+		return ! (strlen($str) > $val);
 	}
 
 	// --------------------------------------------------------------------
@@ -1026,24 +987,23 @@ class CI_Form_validation {
 	/**
 	 * Exact Length
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	value
 	 * @return	bool
 	 */
 	public function exact_length($str, $val)
 	{
-		if (preg_match("/[^0-9]/", $val))
+		if (preg_match('/[^0-9]/', $val))
 		{
 			return FALSE;
 		}
 
-		if (function_exists('mb_strlen'))
+		if (MB_ENABLED === TRUE)
 		{
-			return (mb_strlen($str) != $val) ? FALSE : TRUE;
+			return (mb_strlen($str) == $val);
 		}
 
-		return (strlen($str) != $val) ? FALSE : TRUE;
+		return (strlen($str) == $val);
 	}
 
 	// --------------------------------------------------------------------
@@ -1051,13 +1011,12 @@ class CI_Form_validation {
 	/**
 	 * Valid Email
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
 	public function valid_email($str)
 	{
-		return ( ! preg_match("/^([a-z0-9\+_\-]+)(\.[a-z0-9\+_\-]+)*@([a-z0-9\-]+\.)+[a-z]{2,6}$/ix", $str)) ? FALSE : TRUE;
+		return (bool) preg_match('/^([a-z0-9\+_\-]+)(\.[a-z0-9\+_\-]+)*@([a-z0-9\-]+\.)+[a-z]{2,6}$/ix', $str);
 	}
 
 	// --------------------------------------------------------------------
@@ -1065,7 +1024,6 @@ class CI_Form_validation {
 	/**
 	 * Valid Emails
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
@@ -1078,7 +1036,7 @@ class CI_Form_validation {
 
 		foreach (explode(',', $str) as $email)
 		{
-			if (trim($email) != '' && $this->valid_email(trim($email)) === FALSE)
+			if (trim($email) !== '' && $this->valid_email(trim($email)) === FALSE)
 			{
 				return FALSE;
 			}
@@ -1092,7 +1050,6 @@ class CI_Form_validation {
 	/**
 	 * Validate IP Address
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
@@ -1106,13 +1063,12 @@ class CI_Form_validation {
 	/**
 	 * Alpha
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
 	public function alpha($str)
 	{
-		return ( ! preg_match("/^([a-z])+$/i", $str)) ? FALSE : TRUE;
+		return (bool) preg_match('/^[a-z]+$/i', $str);
 	}
 
 	// --------------------------------------------------------------------
@@ -1120,13 +1076,12 @@ class CI_Form_validation {
 	/**
 	 * Alpha-numeric
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
 	public function alpha_numeric($str)
 	{
-		return ( ! preg_match("/^([a-z0-9])+$/i", $str)) ? FALSE : TRUE;
+		return (bool) preg_match('/^[a-z0-9]+$/i', $str);
 	}
 
 	// --------------------------------------------------------------------
@@ -1134,13 +1089,12 @@ class CI_Form_validation {
 	/**
 	 * Alpha-numeric with underscores and dashes
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
 	public function alpha_dash($str)
 	{
-		return ( ! preg_match("/^([-a-z0-9_-])+$/i", $str)) ? FALSE : TRUE;
+		return (bool) preg_match('/^[a-z0-9_-]+$/i', $str);
 	}
 
 	// --------------------------------------------------------------------
@@ -1148,13 +1102,12 @@ class CI_Form_validation {
 	/**
 	 * Numeric
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
 	public function numeric($str)
 	{
-		return (bool)preg_match( '/^[\-+]?[0-9]*\.?[0-9]+$/', $str);
+		return (bool) preg_match('/^[\-+]?[0-9]*\.?[0-9]+$/', $str);
 
 	}
 
@@ -1163,13 +1116,12 @@ class CI_Form_validation {
 	/**
 	 * Is Numeric
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
 	public function is_numeric($str)
 	{
-		return ( ! is_numeric($str)) ? FALSE : TRUE;
+		return is_numeric($str);
 	}
 
 	// --------------------------------------------------------------------
@@ -1177,7 +1129,6 @@ class CI_Form_validation {
 	/**
 	 * Integer
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
@@ -1191,7 +1142,6 @@ class CI_Form_validation {
 	/**
 	 * Decimal number
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
@@ -1203,9 +1153,8 @@ class CI_Form_validation {
 	// --------------------------------------------------------------------
 
 	/**
-	 * Greather than
+	 * Greater than
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
@@ -1221,9 +1170,25 @@ class CI_Form_validation {
 	// --------------------------------------------------------------------
 
 	/**
+	 * Equal to or Greater than
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function greater_than_equal_to($str, $min)
+	{
+		if ( ! is_numeric($str))
+		{
+			return FALSE;
+		}
+		return $str >= $min;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
 	 * Less than
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
@@ -1239,15 +1204,31 @@ class CI_Form_validation {
 	// --------------------------------------------------------------------
 
 	/**
+	 * Equal to or Less than
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function less_than_equal_to($str, $max)
+	{
+		if ( ! is_numeric($str))
+		{
+			return FALSE;
+		}
+		return $str <= $max;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
 	 * Is a Natural number  (0,1,2,3, etc.)
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
 	public function is_natural($str)
 	{
-		return (bool) preg_match( '/^[0-9]+$/', $str);
+		return (bool) preg_match('/^[0-9]+$/', $str);
 	}
 
 	// --------------------------------------------------------------------
@@ -1255,23 +1236,12 @@ class CI_Form_validation {
 	/**
 	 * Is a Natural number, but not a zero  (1,2,3, etc.)
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
 	public function is_natural_no_zero($str)
 	{
-		if ( ! preg_match( '/^[0-9]+$/', $str))
-		{
-			return FALSE;
-		}
-
-		if ($str == 0)
-		{
-			return FALSE;
-		}
-
-		return TRUE;
+		return ($str != 0 && preg_match('/^[0-9]+$/', $str));
 	}
 
 	// --------------------------------------------------------------------
@@ -1282,7 +1252,6 @@ class CI_Form_validation {
 	 * Tests a string for characters outside of the Base64 alphabet
 	 * as defined by RFC 2045 http://www.faqs.org/rfcs/rfc2045
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
@@ -1299,7 +1268,6 @@ class CI_Form_validation {
 	 * This function allows HTML to be safely shown in a form.
 	 * Special characters are converted.
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
@@ -1320,7 +1288,7 @@ class CI_Form_validation {
 			return $data;
 		}
 
-		return str_replace(array("'", '"', '<', '>'), array("&#39;", "&quot;", '&lt;', '&gt;'), stripslashes($data));
+		return str_replace(array("'", '"', '<', '>'), array('&#39;', '&quot;', '&lt;', '&gt;'), stripslashes($data));
 	}
 
 	// --------------------------------------------------------------------
@@ -1328,7 +1296,6 @@ class CI_Form_validation {
 	/**
 	 * Prep URL
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
@@ -1339,7 +1306,7 @@ class CI_Form_validation {
 			return '';
 		}
 
-		if (substr($str, 0, 7) != 'http://' && substr($str, 0, 8) != 'https://')
+		if (substr($str, 0, 7) !== 'http://' && substr($str, 0, 8) !== 'https://')
 		{
 			$str = 'http://'.$str;
 		}
@@ -1352,7 +1319,6 @@ class CI_Form_validation {
 	/**
 	 * Strip Image Tags
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
@@ -1366,7 +1332,6 @@ class CI_Form_validation {
 	/**
 	 * XSS Clean
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
@@ -1380,7 +1345,6 @@ class CI_Form_validation {
 	/**
 	 * Convert PHP tags to entities
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
@@ -1389,8 +1353,26 @@ class CI_Form_validation {
 		return str_replace(array('<?php', '<?PHP', '<?', '?>'),  array('&lt;?php', '&lt;?PHP', '&lt;?', '?&gt;'), $str);
 	}
 
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reset validation vars
+	 *
+	 * Prevents subsequent validation routines from being affected by the
+	 * results of any previous validation routine due to the CI singleton.
+	 *
+	 * @return	void
+	 */
+	public function reset_validation()
+	{
+		$this->_field_data = array();
+		$this->_config_rules = array();
+		$this->_error_array = array();
+		$this->_error_messages = array();
+		$this->error_string = '';
+	}
+
 }
-// END Form Validation Class
 
 /* End of file Form_validation.php */
 /* Location: ./system/libraries/Form_validation.php */