Cleanup of stray spaces and tabs

1 files changed, 218 insertions, 218 deletions

diff --git a/system/libraries/Form_validation.php b/system/libraries/Form_validation.php
index 64baaef25..566655b12 100644
--- a/system/libraries/Form_validation.php
+++ b/system/libraries/Form_validation.php
@@ -25,29 +25,29 @@
  * @link		http://codeigniter.com/user_guide/libraries/form_validation.html
  */
 class CI_Form_validation {
-	
+
 	var $CI;
-	var $_field_data			= array();	
+	var $_field_data			= array();
 	var $_config_rules			= array();
 	var $_error_array			= array();
-	var $_error_messages		= array();	
+	var $_error_messages		= array();
 	var $_error_prefix			= '<p>';
 	var $_error_suffix			= '</p>';
 	var $error_string			= '';
-	var $_safe_form_data 		= FALSE;
+	var $_safe_form_data		= FALSE;
 
 
 	/**
 	 * Constructor
 	 *
-	 */	
+	 */
 	function CI_Form_validation($rules = array())
-	{	
+	{
 		$this->CI =& get_instance();
-		
+
 		// Validation rules can be stored in a config file.
 		$this->_config_rules = $rules;
-		
+
 		// Automatically load the form helper
 		$this->CI->load->helper('form');
 
@@ -56,12 +56,12 @@ class CI_Form_validation {
 		{
 			mb_internal_encoding($this->CI->config->item('charset'));
 		}
-	
+
 		log_message('debug', "Form Validation Class Initialized");
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Set Rules
 	 *
@@ -80,7 +80,7 @@ class CI_Form_validation {
 		{
 			return;
 		}
-	
+
 		// If an array was passed via the first parameter instead of indidual string
 		// values we cycle through it and recursively call this function.
 		if (is_array($field))
@@ -101,7 +101,7 @@ class CI_Form_validation {
 			}
 			return;
 		}
-		
+
 		// No fields? Nothing to do...
 		if ( ! is_string($field) OR  ! is_string($rules) OR $field == '')
 		{
@@ -113,9 +113,9 @@ class CI_Form_validation {
 
 		// 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
-		// into its components so that we can fetch the corresponding POST data later		
+		// into its components so that we can fetch the corresponding POST data later
 		if (strpos($field, '[') !== FALSE AND 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);
@@ -128,19 +128,19 @@ class CI_Form_validation {
 					$indexes[] = $matches['1'][$i];
 				}
 			}
-			
+
 			$is_array = TRUE;
 		}
 		else
 		{
-			$indexes 	= array();
-			$is_array	= FALSE;		
+			$indexes	= array();
+			$is_array	= FALSE;
 		}
-		
-		// Build our master array		
+
+		// Build our master array
 		$this->_field_data[$field] = array(
-											'field'				=> $field, 
-											'label'				=> $label, 
+											'field'				=> $field,
+											'label'				=> $label,
 											'rules'				=> $rules,
 											'is_array'			=> $is_array,
 											'keys'				=> $indexes,
@@ -150,7 +150,7 @@ class CI_Form_validation {
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Set Error Message
 	 *
@@ -168,12 +168,12 @@ class CI_Form_validation {
 		{
 			$lang = array($lang => $val);
 		}
-	
+
 		$this->_error_messages = array_merge($this->_error_messages, $lang);
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Set The Error Delimiter
 	 *
@@ -183,7 +183,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @param	string
 	 * @return	void
-	 */	
+	 */
 	function set_error_delimiters($prefix = '<p>', $suffix = '</p>')
 	{
 		$this->_error_prefix = $prefix;
@@ -191,7 +191,7 @@ class CI_Form_validation {
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Get Error Message
 	 *
@@ -200,14 +200,14 @@ class CI_Form_validation {
 	 * @access	public
 	 * @param	string	the field name
 	 * @return	void
-	 */	
+	 */
 	function error($field = '', $prefix = '', $suffix = '')
-	{	
+	{
 		if ( ! isset($this->_field_data[$field]['error']) OR $this->_field_data[$field]['error'] == '')
 		{
 			return '';
 		}
-		
+
 		if ($prefix == '')
 		{
 			$prefix = $this->_error_prefix;
@@ -222,7 +222,7 @@ class CI_Form_validation {
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Error String
 	 *
@@ -232,7 +232,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @param	string
 	 * @return	str
-	 */	
+	 */
 	function error_string($prefix = '', $suffix = '')
 	{
 		// No errrors, validation passes!
@@ -240,7 +240,7 @@ class CI_Form_validation {
 		{
 			return '';
 		}
-		
+
 		if ($prefix == '')
 		{
 			$prefix = $this->_error_prefix;
@@ -250,7 +250,7 @@ class CI_Form_validation {
 		{
 			$suffix = $this->_error_suffix;
 		}
-		
+
 		// Generate the error string
 		$str = '';
 		foreach ($this->_error_array as $val)
@@ -260,12 +260,12 @@ class CI_Form_validation {
 				$str .= $prefix.$val.$suffix."\n";
 			}
 		}
-		
+
 		return $str;
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Run the Validator
 	 *
@@ -273,7 +273,7 @@ class CI_Form_validation {
 	 *
 	 * @access	public
 	 * @return	bool
-	 */		
+	 */
 	function run($group = '')
 	{
 		// Do we even have any data to process?  Mm?
@@ -281,7 +281,7 @@ class CI_Form_validation {
 		{
 			return FALSE;
 		}
-		
+
 		// Does the _field_data array containing the validation rules exist?
 		// If not, we look to see if they were assigned via a config file
 		if (count($this->_field_data) == 0)
@@ -291,10 +291,10 @@ class CI_Form_validation {
 			{
 				return FALSE;
 			}
-			
+
 			// Is there a validation rule for the particular URI being accessed?
 			$uri = ($group == '') ? trim($this->CI->uri->ruri_string(), '/') : $group;
-			
+
 			if ($uri != '' AND isset($this->_config_rules[$uri]))
 			{
 				$this->set_rules($this->_config_rules[$uri]);
@@ -303,7 +303,7 @@ class CI_Form_validation {
 			{
 				$this->set_rules($this->_config_rules);
 			}
-	
+
 			// We're we able to set the rules correctly?
 			if (count($this->_field_data) == 0)
 			{
@@ -311,17 +311,17 @@ class CI_Form_validation {
 				return FALSE;
 			}
 		}
-	
+
 		// Load the language file containing error messages
 		$this->CI->lang->load('form_validation');
-							
-		// Cycle through the rules for each field, match the 
+
+		// Cycle through the rules for each field, match the
 		// corresponding $_POST item and test for errors
 		foreach ($this->_field_data as $field => $row)
-		{		
+		{
 			// Fetch the data from the corresponding $_POST array and cache it in the _field_data array.
 			// Depending on whether the field name is an array or a string will determine where we get it from.
-			
+
 			if ($row['is_array'] == TRUE)
 			{
 				$this->_field_data[$field]['postdata'] = $this->_reduce_array($_POST, $row['keys']);
@@ -333,8 +333,8 @@ class CI_Form_validation {
 					$this->_field_data[$field]['postdata'] = $_POST[$field];
 				}
 			}
-		
-			$this->_execute($row, explode('|', $row['rules']), $this->_field_data[$field]['postdata']);		
+
+			$this->_execute($row, explode('|', $row['rules']), $this->_field_data[$field]['postdata']);
 		}
 
 		// Did we end up with any errors?
@@ -347,7 +347,7 @@ 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)
 		{
@@ -359,7 +359,7 @@ class CI_Form_validation {
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Traverse a multidimensional $_POST array index until the data is found
 	 *
@@ -368,7 +368,7 @@ class CI_Form_validation {
 	 * @param	array
 	 * @param	integer
 	 * @return	mixed
-	 */		
+	 */
 	function _reduce_array($array, $keys, $i = 0)
 	{
 		if (is_array($array))
@@ -389,18 +389,18 @@ class CI_Form_validation {
 				return $array;
 			}
 		}
-	
+
 		return $array;
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Re-populate the _POST array with our finalized and processed data
 	 *
 	 * @access	private
 	 * @return	null
-	 */		
+	 */
 	function _reset_post_array()
 	{
 		foreach ($this->_field_data as $field => $row)
@@ -418,7 +418,7 @@ class CI_Form_validation {
 				{
 					// start with a reference
 					$post_ref =& $_POST;
-					
+
 					// before we assign values, make a reference to the right POST key
 					if (count($row['keys']) == 1)
 					{
@@ -452,7 +452,7 @@ class CI_Form_validation {
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Executes the Validation routines
 	 *
@@ -462,21 +462,21 @@ class CI_Form_validation {
 	 * @param	mixed
 	 * @param	integer
 	 * @return	mixed
-	 */	
+	 */
 	function _execute($row, $rules, $postdata = NULL, $cycles = 0)
 	{
 		// If the $_POST data is an array we will run a recursive call
 		if (is_array($postdata))
-		{ 
+		{
 			foreach ($postdata as $key => $val)
 			{
 				$this->_execute($row, $rules, $val, $cycles);
 				$cycles++;
 			}
-			
+
 			return;
 		}
-		
+
 		// --------------------------------------------------------------------
 
 		// If the field is blank, but NOT required, no further tests are necessary
@@ -496,7 +496,7 @@ class CI_Form_validation {
 		}
 
 		// --------------------------------------------------------------------
-		
+
 		// Isset Test. Typically this rule will only apply to checkboxes.
 		if (is_null($postdata) AND $callback == FALSE)
 		{
@@ -504,31 +504,31 @@ class CI_Form_validation {
 			{
 				// Set the message type
 				$type = (in_array('required', $rules)) ? 'required' : 'isset';
-			
+
 				if ( ! isset($this->_error_messages[$type]))
 				{
 					if (FALSE === ($line = $this->CI->lang->line($type)))
 					{
 						$line = 'The field was not set';
-					}							
+					}
 				}
 				else
 				{
 					$line = $this->_error_messages[$type];
 				}
-				
+
 				// Build the error message
 				$message = sprintf($line, $this->_translate_fieldname($row['label']));
 
 				// Save the error message
 				$this->_field_data[$row['field']]['error'] = $message;
-				
+
 				if ( ! isset($this->_error_array[$row['field']]))
 				{
 					$this->_error_array[$row['field']] = $message;
 				}
 			}
-					
+
 			return;
 		}
 
@@ -538,7 +538,7 @@ class CI_Form_validation {
 		foreach ($rules As $rule)
 		{
 			$_in_array = FALSE;
-			
+
 			// We set the $postdata variable with the current data in our master array so that
 			// each cycle of the loop is dealing with the processed data from the last cycle
 			if ($row['is_array'] == TRUE AND is_array($this->_field_data[$row['field']]['postdata']))
@@ -549,7 +549,7 @@ class CI_Form_validation {
 				{
 					continue;
 				}
-			
+
 				$postdata = $this->_field_data[$row['field']]['postdata'][$cycles];
 				$_in_array = TRUE;
 			}
@@ -559,15 +559,15 @@ class CI_Form_validation {
 			}
 
 			// --------------------------------------------------------------------
-	
-			// Is the rule a callback?			
+
+			// Is the rule a callback?
 			$callback = FALSE;
 			if (substr($rule, 0, 9) == 'callback_')
 			{
 				$rule = substr($rule, 9);
 				$callback = TRUE;
 			}
-			
+
 			// Strip the parameter (if exists) from the rule
 			// Rules can contain a parameter: max_length[5]
 			$param = FALSE;
@@ -576,15 +576,15 @@ class CI_Form_validation {
 				$rule	= $match[1];
 				$param	= $match[2];
 			}
-			
+
 			// Call the function that corresponds to the rule
 			if ($callback === TRUE)
 			{
 				if ( ! method_exists($this->CI, $rule))
-				{ 		
+				{
 					continue;
 				}
-				
+
 				// Run the function and grab the result
 				$result = $this->CI->$rule($postdata, $param);
 
@@ -597,7 +597,7 @@ class CI_Form_validation {
 				{
 					$this->_field_data[$row['field']]['postdata'] = (is_bool($result)) ? $postdata : $result;
 				}
-			
+
 				// If the field isn't required and we just processed a callback we'll move on...
 				if ( ! in_array('required', $rules, TRUE) AND $result !== FALSE)
 				{
@@ -605,15 +605,15 @@ class CI_Form_validation {
 				}
 			}
 			else
-			{				
+			{
 				if ( ! method_exists($this, $rule))
 				{
-					// If our own wrapper function doesn't exist we see if a native PHP function does. 
+					// If our own wrapper function doesn't exist we see if a native PHP function does.
 					// Users can use any native PHP function call that has one param.
 					if (function_exists($rule))
 					{
 						$result = $rule($postdata);
-											
+
 						if ($_in_array == TRUE)
 						{
 							$this->_field_data[$row['field']]['postdata'][$cycles] = (is_bool($result)) ? $postdata : $result;
@@ -623,7 +623,7 @@ class CI_Form_validation {
 							$this->_field_data[$row['field']]['postdata'] = (is_bool($result)) ? $postdata : $result;
 						}
 					}
-										
+
 					continue;
 				}
 
@@ -638,54 +638,54 @@ class CI_Form_validation {
 					$this->_field_data[$row['field']]['postdata'] = (is_bool($result)) ? $postdata : $result;
 				}
 			}
-							
+
 			// Did the rule test negatively?  If so, grab the error.
 			if ($result === FALSE)
-			{			
+			{
 				if ( ! isset($this->_error_messages[$rule]))
 				{
 					if (FALSE === ($line = $this->CI->lang->line($rule)))
 					{
 						$line = 'Unable to access an error message corresponding to your field name.';
-					}						
+					}
 				}
 				else
 				{
 					$line = $this->_error_messages[$rule];
 				}
-				
+
 				// 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']))
 				{
 					$param = $this->_translate_fieldname($this->_field_data[$param]['label']);
 				}
-				
+
 				// Build the error message
 				$message = sprintf($line, $this->_translate_fieldname($row['label']), $param);
 
 				// Save the error message
 				$this->_field_data[$row['field']]['error'] = $message;
-				
+
 				if ( ! isset($this->_error_array[$row['field']]))
 				{
 					$this->_error_array[$row['field']] = $message;
 				}
-				
+
 				return;
 			}
 		}
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Translate a field name
 	 *
 	 * @access	private
 	 * @param	string	the field name
 	 * @return	string
-	 */	
+	 */
 	function _translate_fieldname($fieldname)
 	{
 		// Do we need to translate the field name?
@@ -693,8 +693,8 @@ class CI_Form_validation {
 		if (substr($fieldname, 0, 5) == 'lang:')
 		{
 			// Grab the variable
-			$line = substr($fieldname, 5);			
-			
+			$line = substr($fieldname, 5);
+
 			// Were we able to translate the field name?  If not we use $line
 			if (FALSE === ($fieldname = $this->CI->lang->line($line)))
 			{
@@ -706,7 +706,7 @@ class CI_Form_validation {
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Get the value from a form
 	 *
@@ -717,19 +717,19 @@ class CI_Form_validation {
 	 * @param	string	the field name
 	 * @param	string
 	 * @return	void
-	 */	
+	 */
 	function set_value($field = '', $default = '')
 	{
 		if ( ! isset($this->_field_data[$field]))
 		{
 			return $default;
 		}
-		
+
 		return $this->_field_data[$field]['postdata'];
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Set Select
 	 *
@@ -740,9 +740,9 @@ class CI_Form_validation {
 	 * @param	string
 	 * @param	string
 	 * @return	string
-	 */	
+	 */
 	function set_select($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)
@@ -751,9 +751,9 @@ class CI_Form_validation {
 			}
 			return '';
 		}
-	
+
 		$field = $this->_field_data[$field]['postdata'];
-		
+
 		if (is_array($field))
 		{
 			if ( ! in_array($value, $field))
@@ -768,12 +768,12 @@ class CI_Form_validation {
 				return '';
 			}
 		}
-			
+
 		return ' selected="selected"';
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Set Radio
 	 *
@@ -784,7 +784,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @param	string
 	 * @return	string
-	 */	
+	 */
 	function set_radio($field = '', $value = '', $default = FALSE)
 	{
 		if ( ! isset($this->_field_data[$field]) OR ! isset($this->_field_data[$field]['postdata']))
@@ -795,9 +795,9 @@ class CI_Form_validation {
 			}
 			return '';
 		}
-	
+
 		$field = $this->_field_data[$field]['postdata'];
-		
+
 		if (is_array($field))
 		{
 			if ( ! in_array($value, $field))
@@ -812,12 +812,12 @@ class CI_Form_validation {
 				return '';
 			}
 		}
-			
+
 		return ' checked="checked"';
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Set Checkbox
 	 *
@@ -828,7 +828,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @param	string
 	 * @return	string
-	 */	
+	 */
 	function set_checkbox($field = '', $value = '', $default = FALSE)
 	{
 		if ( ! isset($this->_field_data[$field]) OR ! isset($this->_field_data[$field]['postdata']))
@@ -839,9 +839,9 @@ class CI_Form_validation {
 			}
 			return '';
 		}
-	
+
 		$field = $this->_field_data[$field]['postdata'];
-		
+
 		if (is_array($field))
 		{
 			if ( ! in_array($value, $field))
@@ -856,12 +856,12 @@ class CI_Form_validation {
 				return '';
 			}
 		}
-			
+
 		return ' checked="checked"';
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Required
 	 *
@@ -880,9 +880,9 @@ class CI_Form_validation {
 			return ( ! empty($str));
 		}
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Match one field to another
 	 *
@@ -895,16 +895,16 @@ class CI_Form_validation {
 	{
 		if ( ! isset($_POST[$field]))
 		{
-			return FALSE;				
+			return FALSE;
 		}
-		
+
 		$field = $_POST[$field];
 
 		return ($str !== $field) ? FALSE : TRUE;
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Minimum Length
 	 *
@@ -912,7 +912,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @param	value
 	 * @return	bool
-	 */	
+	 */
 	function min_length($str, $val)
 	{
 		if (preg_match("/[^0-9]/", $val))
@@ -922,14 +922,14 @@ class CI_Form_validation {
 
 		if (function_exists('mb_strlen'))
 		{
-			return (mb_strlen($str) < $val) ? FALSE : TRUE;		
+			return (mb_strlen($str) < $val) ? FALSE : TRUE;
 		}
-	
+
 		return (strlen($str) < $val) ? FALSE : TRUE;
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Max Length
 	 *
@@ -937,7 +937,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @param	value
 	 * @return	bool
-	 */	
+	 */
 	function max_length($str, $val)
 	{
 		if (preg_match("/[^0-9]/", $val))
@@ -947,14 +947,14 @@ class CI_Form_validation {
 
 		if (function_exists('mb_strlen'))
 		{
-			return (mb_strlen($str) > $val) ? FALSE : TRUE;		
+			return (mb_strlen($str) > $val) ? FALSE : TRUE;
 		}
-	
+
 		return (strlen($str) > $val) ? FALSE : TRUE;
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Exact Length
 	 *
@@ -962,7 +962,7 @@ class CI_Form_validation {
 	 * @param	string
 	 * @param	value
 	 * @return	bool
-	 */	
+	 */
 	function exact_length($str, $val)
 	{
 		if (preg_match("/[^0-9]/", $val))
@@ -972,42 +972,42 @@ class CI_Form_validation {
 
 		if (function_exists('mb_strlen'))
 		{
-			return (mb_strlen($str) != $val) ? FALSE : TRUE;		
+			return (mb_strlen($str) != $val) ? FALSE : TRUE;
 		}
-	
+
 		return (strlen($str) != $val) ? FALSE : TRUE;
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Valid Email
 	 *
 	 * @access	public
 	 * @param	string
 	 * @return	bool
-	 */	
+	 */
 	function valid_email($str)
 	{
 		return ( ! preg_match("/^([a-z0-9\+_\-]+)(\.[a-z0-9\+_\-]+)*@([a-z0-9\-]+\.)+[a-z]{2,6}$/ix", $str)) ? FALSE : TRUE;
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Valid Emails
 	 *
 	 * @access	public
 	 * @param	string
 	 * @return	bool
-	 */	
+	 */
 	function valid_emails($str)
 	{
 		if (strpos($str, ',') === FALSE)
 		{
 			return $this->valid_email(trim($str));
 		}
-		
+
 		foreach(explode(',', $str) as $email)
 		{
 			if (trim($email) != '' && $this->valid_email(trim($email)) === FALSE)
@@ -1015,12 +1015,12 @@ class CI_Form_validation {
 				return FALSE;
 			}
 		}
-		
+
 		return TRUE;
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Validate IP Address
 	 *
@@ -1034,56 +1034,56 @@ class CI_Form_validation {
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Alpha
 	 *
 	 * @access	public
 	 * @param	string
 	 * @return	bool
-	 */		
+	 */
 	function alpha($str)
 	{
 		return ( ! preg_match("/^([a-z])+$/i", $str)) ? FALSE : TRUE;
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Alpha-numeric
 	 *
 	 * @access	public
 	 * @param	string
 	 * @return	bool
-	 */	
+	 */
 	function alpha_numeric($str)
 	{
 		return ( ! preg_match("/^([a-z0-9])+$/i", $str)) ? FALSE : TRUE;
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Alpha-numeric with underscores and dashes
 	 *
 	 * @access	public
 	 * @param	string
 	 * @return	bool
-	 */	
+	 */
 	function alpha_dash($str)
 	{
 		return ( ! preg_match("/^([-a-z0-9_-])+$/i", $str)) ? FALSE : TRUE;
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Numeric
 	 *
 	 * @access	public
 	 * @param	string
 	 * @return	bool
-	 */	
+	 */
 	function numeric($str)
 	{
 		return (bool)preg_match( '/^[\-+]?[0-9]*\.?[0-9]+$/', $str);
@@ -1092,72 +1092,72 @@ class CI_Form_validation {
 
 	// --------------------------------------------------------------------
 
-    /**
-     * Is Numeric
-     *
-     * @access    public
-     * @param    string
-     * @return    bool
-     */
-    function is_numeric($str)
-    {
-        return ( ! is_numeric($str)) ? FALSE : TRUE;
-    } 
+	/**
+	 * Is Numeric
+	 *
+	 * @access	public
+	 * @param	string
+	 * @return	bool
+	 */
+	function is_numeric($str)
+	{
+		return ( ! is_numeric($str)) ? FALSE : TRUE;
+	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Integer
 	 *
 	 * @access	public
 	 * @param	string
 	 * @return	bool
-	 */	
+	 */
 	function integer($str)
 	{
 		return (bool)preg_match( '/^[\-+]?[0-9]+$/', $str);
 	}
-	
+
 	// --------------------------------------------------------------------
 
-    /**
-     * Is a Natural number  (0,1,2,3, etc.)
-     *
-     * @access	public
-     * @param	string
-     * @return	bool
-     */
-    function is_natural($str)
-    {   
-   		return (bool)preg_match( '/^[0-9]+$/', $str);
-    }
+	/**
+	 * Is a Natural number  (0,1,2,3, etc.)
+	 *
+	 * @access	public
+	 * @param	string
+	 * @return	bool
+	 */
+	function is_natural($str)
+	{
+		return (bool)preg_match( '/^[0-9]+$/', $str);
+	}
 
 	// --------------------------------------------------------------------
 
-    /**
-     * Is a Natural number, but not a zero  (1,2,3, etc.)
-     *
-     * @access	public
-     * @param	string
-     * @return	bool
-     */
+	/**
+	 * Is a Natural number, but not a zero  (1,2,3, etc.)
+	 *
+	 * @access	public
+	 * @param	string
+	 * @return	bool
+	 */
 	function is_natural_no_zero($str)
-    {
-    	if ( ! preg_match( '/^[0-9]+$/', $str))
-    	{
-    		return FALSE;
-    	}
-    	
-    	if ($str == 0)
-    	{
-    		return FALSE;
-    	}
-    
-   		return TRUE;
-    }
-	
+	{
+		if ( ! preg_match( '/^[0-9]+$/', $str))
+		{
+			return FALSE;
+		}
+
+		if ($str == 0)
+		{
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Valid Base64
 	 *
@@ -1172,9 +1172,9 @@ class CI_Form_validation {
 	{
 		return (bool) ! preg_match('/[^a-zA-Z0-9\/\+=]/', $str);
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Prep data for form
 	 *
@@ -1193,10 +1193,10 @@ class CI_Form_validation {
 			{
 				$data[$key] = $this->prep_for_form($val);
 			}
-			
+
 			return $data;
 		}
-		
+
 		if ($this->_safe_form_data == FALSE OR $data === '')
 		{
 			return $data;
@@ -1204,54 +1204,54 @@ class CI_Form_validation {
 
 		return str_replace(array("'", '"', '<', '>'), array("&#39;", "&quot;", '&lt;', '&gt;'), stripslashes($data));
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Prep URL
 	 *
 	 * @access	public
 	 * @param	string
 	 * @return	string
-	 */	
+	 */
 	function prep_url($str = '')
 	{
 		if ($str == 'http://' OR $str == '')
 		{
 			return '';
 		}
-		
+
 		if (substr($str, 0, 7) != 'http://' && substr($str, 0, 8) != 'https://')
 		{
 			$str = 'http://'.$str;
 		}
-		
+
 		return $str;
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Strip Image Tags
 	 *
 	 * @access	public
 	 * @param	string
 	 * @return	string
-	 */	
+	 */
 	function strip_image_tags($str)
 	{
 		return $this->CI->input->strip_image_tags($str);
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * XSS Clean
 	 *
 	 * @access	public
 	 * @param	string
 	 * @return	string
-	 */	
+	 */
 	function xss_clean($str)
 	{
 		if ( ! isset($this->CI->security))
@@ -1261,16 +1261,16 @@ class CI_Form_validation {
 
 		return $this->CI->security->xss_clean($str);
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Convert PHP tags to entities
 	 *
 	 * @access	public
 	 * @param	string
 	 * @return	string
-	 */	
+	 */
 	function encode_php_tags($str)
 	{
 		return str_replace(array('<?php', '<?PHP', '<?', '?>'),  array('&lt;?php', '&lt;?PHP', '&lt;?', '?&gt;'), $str);