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增加Input和Filter类
This commit is contained in:
thinkphp
389
Think/Input.php
389
Think/Input.php
@@ -11,14 +11,6 @@
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// $Id$
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namespace Think;
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class Input {
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static private $filter = null; // 输入过滤
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static private $_input = array('get','post','request','env','server','cookie','session','globals','files','call');
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//html标签设置
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public static $htmlTags = array(
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'allow' => 'table|td|th|tr|i|b|u|strong|img|p|br|div|strong|em|ul|ol|li|dl|dd|dt|a',
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'ban' => 'html|head|meta|link|base|basefont|body|bgsound|title|style|script|form|iframe|frame|frameset|applet|id|ilayer|layer|name|script|style|xml',
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);
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/**
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+----------------------------------------------------------
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@@ -33,352 +25,47 @@ class Input {
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+----------------------------------------------------------
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*/
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static public function __callStatic($type,$args=array()) {
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$type = strtolower(trim($type));
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if(in_array($type,self::$_input,true)) {
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switch($type) {
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case 'get': $input =& $_GET;break;
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case 'post': $input =& $_POST;break;
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case 'put' : parse_str(file_get_contents('php://input'), $input);break;
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case 'param' :
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switch($_SERVER['REQUEST_METHOD']) {
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case 'POST':
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$input = $_POST;
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break;
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case 'PUT':
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parse_str(file_get_contents('php://input'), $input);
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break;
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default:
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$input = $_GET;
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}
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break;
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case 'request': $input =& $_REQUEST;break;
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case 'env': $input =& $_ENV;break;
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case 'server': $input =& $_SERVER;break;
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case 'cookie': $input =& $_COOKIE;break;
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case 'session': $input =& $_SESSION;break;
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case 'globals': $input =& $GLOBALS;break;
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case 'files': $input =& $_FILES;break;
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default:return NULL;
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}
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if(0==count($args)) {
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// 返回全部数据
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return $input;
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}elseif(array_key_exists($args[0],$input)) {
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$filters = isset($args[1])?$args[1]:self::$filter;
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$filters = explode(',',$filters);
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$data = $input[$args[0]];
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foreach($filters as $filter){
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if(is_callable($filter)) {
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$data = is_array($data)?array_map($filter,$data):$filter($data); // 参数过滤
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}
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switch(strtolower($type)) {
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case 'get': $input =& $_GET;break;
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case 'post': $input =& $_POST;break;
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case 'put' : parse_str(file_get_contents('php://input'), $input);break;
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case 'param' :
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switch($_SERVER['REQUEST_METHOD']) {
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case 'POST':
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$input = $_POST;
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break;
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case 'PUT':
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parse_str(file_get_contents('php://input'), $input);
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break;
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default:
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$input = $_GET;
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}
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break;
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case 'request': $input =& $_REQUEST;break;
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case 'server': $input =& $_SERVER;break;
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case 'cookie': $input =& $_COOKIE;break;
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case 'session': $input =& $_SESSION;break;
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case 'globals': $input =& $GLOBALS;break;
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case 'files': $input =& $_FILES;break;
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default:return NULL;
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}
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if(''== $args[0]) {
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// 返回全部数据
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return $input;
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}elseif(array_key_exists($args[0],$input)) {
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$filters = isset($args[1])?$args[1]:'';
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$filters = explode(',',$filters);
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$data = $input[$args[0]];
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foreach($filters as $filter){
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if(is_callable($filter)) {
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$data = is_array($data)?array_map($filter,$data):$filter($data); // 参数过滤
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}
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}else{
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// 不存在指定输入
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$data = isset($args[2])?$args[2]:NULL;
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}
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return $data;
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}else{
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// 不存在指定输入
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$data = isset($args[2])?$args[2]:NULL;
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}
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return $data;
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}
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/**
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+----------------------------------------------------------
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* 设置数据过滤方法
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+----------------------------------------------------------
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* @access public
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+----------------------------------------------------------
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* @param mixed $filter 过滤方法
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+----------------------------------------------------------
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* @return void
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+----------------------------------------------------------
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*/
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static public function filter($filter) {
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self::$filter = $filter;
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}
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/**
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+----------------------------------------------------------
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* 字符MagicQuote转义过滤
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+----------------------------------------------------------
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* @access public
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+----------------------------------------------------------
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* @return void
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+----------------------------------------------------------
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*/
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static public function noGPC() {
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if ( get_magic_quotes_gpc() ) {
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$_POST = stripslashes_deep($_POST);
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$_GET = stripslashes_deep($_GET);
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$_COOKIE = stripslashes_deep($_COOKIE);
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$_REQUEST= stripslashes_deep($_REQUEST);
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}
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}
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/**
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+----------------------------------------------------------
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* 处理字符串，以便可以正常进行搜索
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+----------------------------------------------------------
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* @access public
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+----------------------------------------------------------
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* @param string $string 要处理的字符串
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+----------------------------------------------------------
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* @return string
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+----------------------------------------------------------
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*/
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static public function forSearch($string) {
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return str_replace( array('%','_'), array('\%','\_'), $string );
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}
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/**
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+----------------------------------------------------------
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* @access public
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+----------------------------------------------------------
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* @param string $string 要处理的字符串
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+----------------------------------------------------------
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* @return string
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+----------------------------------------------------------
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*/
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static public function forShow($string) {
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return self::nl2Br( self::hsc($string) );
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}
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/**
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+----------------------------------------------------------
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* 处理纯文本数据，以便在textarea标签中显示
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+----------------------------------------------------------
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* @access public
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+----------------------------------------------------------
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* @param string $string 要处理的字符串
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+----------------------------------------------------------
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* @return string
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+----------------------------------------------------------
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*/
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static public function forTarea($string) {
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return str_ireplace(array('<textarea>','</textarea>'), array('<textarea>','</textarea>'), $string);
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}
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/**
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+----------------------------------------------------------
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* 将数据中的单引号和双引号进行转义
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+----------------------------------------------------------
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* @access public
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+----------------------------------------------------------
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* @param string $text 要处理的字符串
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+----------------------------------------------------------
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* @return string
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+----------------------------------------------------------
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*/
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static public function forTag($string) {
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return str_replace(array('"',"'"), array('"','''), $string);
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}
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/**
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+----------------------------------------------------------
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* 把换行转换为<br />标签
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+----------------------------------------------------------
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* @access public
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+----------------------------------------------------------
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* @param string $string 要处理的字符串
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+----------------------------------------------------------
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* @return string
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+----------------------------------------------------------
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*/
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static public function nl2Br($string) {
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return nl2Br($string);
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}
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/**
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+----------------------------------------------------------
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* 如果 magic_quotes_gpc 为关闭状态，这个函数可以转义字符串
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+----------------------------------------------------------
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* @access public
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+----------------------------------------------------------
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* @param string $string 要处理的字符串
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+----------------------------------------------------------
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* @return string
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+----------------------------------------------------------
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*/
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static public function addSlashes($string) {
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if (!get_magic_quotes_gpc()) {
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$string = addslashes($string);
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}
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return $string;
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}
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/**
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+----------------------------------------------------------
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* 从$_POST，$_GET，$_COOKIE，$_REQUEST等数组中获得数据
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+----------------------------------------------------------
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* @access public
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+----------------------------------------------------------
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* @param string $string 要处理的字符串
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+----------------------------------------------------------
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* @return string
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+----------------------------------------------------------
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*/
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static public function getVar($string) {
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return self::stripSlashes($string);
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}
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/**
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+----------------------------------------------------------
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* 如果 magic_quotes_gpc 为开启状态，这个函数可以反转义字符串
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+----------------------------------------------------------
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* @access public
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+----------------------------------------------------------
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* @param string $string 要处理的字符串
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+----------------------------------------------------------
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* @return string
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+----------------------------------------------------------
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*/
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static public function stripSlashes($string) {
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if (get_magic_quotes_gpc()) {
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$string = stripslashes($string);
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}
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return $string;
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}
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/**
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+----------------------------------------------------------
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* 用于在textbox表单中显示html代码
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+----------------------------------------------------------
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* @access public
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+----------------------------------------------------------
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* @param string $string 要处理的字符串
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+----------------------------------------------------------
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* @return string
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+----------------------------------------------------------
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*/
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static function hsc($string) {
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return preg_replace(array("/&/i", "/ /i"), array('&', '&nbsp;'), htmlspecialchars($string, ENT_QUOTES));
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}
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/**
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+----------------------------------------------------------
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* 是hsc()方法的逆操作
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+----------------------------------------------------------
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* @access public
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+----------------------------------------------------------
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* @param string $text 要处理的字符串
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+----------------------------------------------------------
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* @return string
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+----------------------------------------------------------
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*/
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static function undoHsc($text) {
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return preg_replace(array("/>/i", "/</i", "/"/i", "/'/i", '/&nbsp;/i'), array(">", "<", "\"", "'", " "), $text);
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}
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/**
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+----------------------------------------------------------
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* 输出安全的html，用于过滤危险代码
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+----------------------------------------------------------
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* @access public
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+----------------------------------------------------------
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* @param string $text 要处理的字符串
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* @param mixed $allowTags 允许的标签列表，如 table|td|th|td
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+----------------------------------------------------------
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* @return string
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+----------------------------------------------------------
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*/
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static public function safeHtml($text, $allowTags = null) {
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$text = trim($text);
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//完全过滤注释
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$text = preg_replace('/<!--?.*-->/','',$text);
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//完全过滤动态代码
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$text = preg_replace('/<\?|\?'.'>/','',$text);
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//完全过滤js
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$text = preg_replace('/<script?.*\/script>/','',$text);
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$text = str_replace('[','[',$text);
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$text = str_replace(']',']',$text);
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$text = str_replace('|','|',$text);
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//过滤换行符
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$text = preg_replace('/\r?\n/','',$text);
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//br
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$text = preg_replace('/<br(\s\/)?'.'>/i','[br]',$text);
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$text = preg_replace('/(\[br\]\s*){10,}/i','[br]',$text);
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//过滤危险的属性，如：过滤on事件lang js
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while(preg_match('/(<[^><]+)(lang|on|action|background|codebase|dynsrc|lowsrc)[^><]+/i',$text,$mat)){
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$text=str_replace($mat[0],$mat[1],$text);
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}
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while(preg_match('/(<[^><]+)(window\.|javascript:|js:|about:|file:|document\.|vbs:|cookie)([^><]*)/i',$text,$mat)){
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$text=str_replace($mat[0],$mat[1].$mat[3],$text);
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}
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if( empty($allowTags) ) { $allowTags = self::$htmlTags['allow']; }
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//允许的HTML标签
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$text = preg_replace('/<('.$allowTags.')( [^><\[\]]*)>/i','[\1\2]',$text);
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//过滤多余html
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if ( empty($banTag) ) { $banTag = self::$htmlTags['ban']; }
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$text = preg_replace('/<\/?('.$banTag.')[^><]*>/i','',$text);
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//过滤合法的html标签
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while(preg_match('/<([a-z]+)[^><\[\]]*>[^><]*<\/\1>/i',$text,$mat)){
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$text=str_replace($mat[0],str_replace('>',']',str_replace('<','[',$mat[0])),$text);
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}
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//转换引号
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while(preg_match('/(\[[^\[\]]*=\s*)(\"|\')([^\2=\[\]]+)\2([^\[\]]*\])/i',$text,$mat)){
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$text=str_replace($mat[0],$mat[1].'|'.$mat[3].'|'.$mat[4],$text);
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}
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//空属性转换
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$text = str_replace('\'\'','||',$text);
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$text = str_replace('""','||',$text);
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//过滤错误的单个引号
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while(preg_match('/\[[^\[\]]*(\"|\')[^\[\]]*\]/i',$text,$mat)){
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$text=str_replace($mat[0],str_replace($mat[1],'',$mat[0]),$text);
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}
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//转换其它所有不合法的 < >
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$text = str_replace('<','<',$text);
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$text = str_replace('>','>',$text);
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$text = str_replace('"','"',$text);
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//反转换
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$text = str_replace('[','<',$text);
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$text = str_replace(']','>',$text);
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$text = str_replace('|','"',$text);
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//过滤多余空格
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$text = str_replace(' ',' ',$text);
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return $text;
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}
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/**
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+----------------------------------------------------------
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* 删除html标签，得到纯文本。可以处理嵌套的标签
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+----------------------------------------------------------
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* @access public
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+----------------------------------------------------------
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* @param string $string 要处理的html
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+----------------------------------------------------------
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* @return string
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+----------------------------------------------------------
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*/
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static public function deleteHtmlTags($string) {
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while(strstr($string, '>')) {
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$currentBeg = strpos($string, '<');
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$currentEnd = strpos($string, '>');
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$tmpStringBeg = @substr($string, 0, $currentBeg);
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$tmpStringEnd = @substr($string, $currentEnd + 1, strlen($string));
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$string = $tmpStringBeg.$tmpStringEnd;
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}
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return $string;
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}
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/**
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+----------------------------------------------------------
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* 处理文本中的换行
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+----------------------------------------------------------
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* @access public
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+----------------------------------------------------------
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* @param string $string 要处理的字符串
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* @param mixed $br 对换行的处理，
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* false：去除换行；true：保留原样；string：替换成string
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+----------------------------------------------------------
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* @return string
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+----------------------------------------------------------
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*/
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static public function nl2($string, $br = '<br />') {
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if ($br == false) {
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$string = preg_replace("/(\015\012)|(\015)|(\012)/", '', $string);
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} elseif ($br != true){
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$string = preg_replace("/(\015\012)|(\015)|(\012)/", $br, $string);
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}
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return $string;
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}
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}
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