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mraiur_var_security.php
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mraiur_var_security.php
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<?php
/**
* Secure global vars
*@author Nikolai Ivanov <mraiur@nikolai-ivanov.com>
*@copyright Copyright (c) 2010, Nikolai Ivanov
*@link http://nikolai-ivanov.com
*@version v0.1
*@license http://opensource.org/licenses/gpl-license.php GNU Public License
*/
class vars
{
public function vars()
{
}
private function process_vars( $paramArray = "post", $paramName, $paramType = "str", $paramDefault = "", $skip_formats = array() )
{
$from_array = array();
if($paramArray === "post" )
{
$from_array = $_POST;
}
elseif($paramArray === "get")
{
$from_array = $_GET;
}
if( $paramType == "str" )
{
return $this->clearString($from_array, $paramName, $paramDefault, $skip_formats);
}
if( $paramType == "str_alpha" )
{
return $this->clearAlphaString($from_array, $paramName, $paramDefault);
}
elseif( $paramType == "int" )
{
return $this->clearInt($from_array, $paramName, ( ($paramDefault=="")?0:$paramDefault ) );
}
elseif( $paramType == "double" )
{
return $this->clearDouble($from_array, $paramName, ( ($paramDefault=="")?0:$paramDefault ) );
}
elseif( $paramType == "bool" )
{
return $this->clearBool($from_array, $paramName, false);
}
}
/**
*@param $paramName name string of the key of array
*@param $paramType string for the clear method "str", "int", "double"
*@param $paramDefault default return value if not found in the array
*/
public function get($paramName, $paramType = "str", $paramDefault = "", $skip_formats = array())
{
return $this->process_vars("get", $paramName, $paramType, $paramDefault, array_flip($skip_formats));
}
public function get_all()
{
$return = array();
foreach($_GET as $key => $value)
{
if($value > 0 )
{
$return[$key] = $this->get($key, "int");
}
else
{
$return[$key] = $this->get($key);
}
}
return $return;
}
/**
*@param $paramName name string of the key of array
*@param $paramType string for the clear method "str", "int", "double"
*@param $paramDefault default return value if not found in the array
*/
public function post( $paramName, $paramType = "str", $paramDefault = "", $skip_formats = array())
{
return $this->process_vars("post", $paramName, $paramType, $paramDefault, array_flip($skip_formats));
}
public function clearString( $paramArray, $paramName = "", $paramDefault = "", $skip_formats = array())
{
if( isset($paramArray[$paramName]))
{
$string = $paramArray[$paramName];
if( !isset($skip_formats['trim']) ){ $string = trim($string); }
if( !isset($skip_formats['strip_tags']) ){ $string = strip_tags($string); }
if( !isset($skip_formats['addslashes']) ){ $string = addslashes($string); }
return $string;
}
else
{
return $paramDefault;
}
}
public function clearAlphaString( $paramArray, $paramName = "", $paramDefault = "")
{
if( isset($paramArray[$paramName]))
{
$string = strip_tags(trim($paramArray[$paramName]));
$string = preg_replace("/[^A-Za-z]/", "", $string);
return addslashes( $string );
}
else
{
return $paramDefault;
}
}
public function clearBool( $paramArray, $paramName = "", $paramDefault = "")
{
if( isset($paramArray[$paramName]) && ( $paramArray[$paramName] == true || $paramArray[$paramName] == "true"))
{
return true;
}
else
{
return false;
}
}
public function clearInt( $paramArray, $paramName = "", $paramDefaultValue = 0)
{
if( isset($paramArray[$paramName]) )
{
return intval(strip_tags(trim($paramArray[$paramName])));
}
else
{
return $paramDefaultValue;
}
}
public function clearDouble( $paramArray, $paramName = "", $paramDefaultValue = 0)
{
if( isset($paramArray[$paramName]) )
{
return floatval(strip_tags(trim($paramArray[$paramName])));
}
else
{
return $paramDefaultValue;
}
}
}
?>