这篇文章主要介绍了php输入数据统一类,实例分析了针对输入数据的各种转换技巧,具有一定参考借鉴价值,需要的朋友可以参考下
本文实例讲述了php输入数据统一类。分享给大家供大家参考。具体如下:
- <?php
 - class cls_request{
 - private $getdata;//存储get的数据
 - private $postdata;//存储post的数据
 - private $requestdata;//存储request的数据
 - private $filedata;//存储file的数据
 - private $cookiedata;//存储cooki
 - static $_instance;//本类的实例
 - private function __construct(){
 - $this->getdata = self::format_data($_GET);
 - $this->postdata = self::format_data($_POST);
 - $this->requestdata = array_merge($this->getdata,$this->postdata);
 - $this->cookiedata = self::format_data($_COOKIE);
 - $this->filedata = self::format_data($_FILES);
 - }
 - //类的初始化,返回cls_request对象
 - public static function get_instance(){
 - if(!(self::$_instance instanceof self)){
 - self::$_instance = new self();
 - }
 - return self::$_instance;
 - }
 - //获取GET传递过来的数值变量
 - public function get_num($key){
 - if(!isset($this->getdata[$key])){
 - return false;
 - }
 - return $this->to_num($this->getdata[$key]);
 - }
 - //获取POST传递过来的数据变量
 - public function post_num($key){
 - if(!isset($this->postdata[$key])){
 - return false;
 - }
 - return $this->to_num($this->postdata[$key]);
 - }
 - //获取Request传递过来的数值变量
 - public function request_num($key){
 - if(!isset($this->requestdata[$key])){
 - return false;
 - }
 - return $this->to_num($this->requestdata[$key]);
 - }
 - //获取Cookie传递过来的数值变量
 - public function cookie_num($key){
 - if(!isset($this->cookiedata[$key])){
 - return false;
 - }
 - return $this->to_num($this->cookiedata[$key]);
 - }
 - //获取File传递过来的数值变量
 - public function filedata($key){
 - return $this->filedata[$key];//返回数组
 - }
 - //获取GET传递过来的字符串变量
 - public function get_string($key,$isfilter=true){
 - if(!isset($this->getdata[$key])){
 - return false;
 - }
 - if($isfilter){
 - return $this->filter_string($this->getdata[$key]);
 - }else{
 - return $this->getdata[$key];
 - }
 - }
 - //获取POST传递过来的字符串变量
 - public function post_string($key,$isfilter=true){
 - if(!isset($this->postdata[$key])){
 - return false;
 - }
 - if($isfilter){
 - return $this->filter_string($this->postdata[$key]);
 - }else{
 - return $this->postdata[$key];
 - }
 - }
 - //获取Request传递过来的字符串变量
 - public function request_string($key,$isfilter=true){
 - if(!isset($this->requestdata[$key])){
 - return false;
 - }
 - if($isfilter){
 - return $this->filter_string($this->requestdata[$key]);
 - }else{
 - return $this->requestdata[$key];
 - }
 - }
 - //获取Cookie传递过来的字符串变量
 - public function cookie_string($key,$isfilter=true){
 - if(!isset($this->cookiedata[$key])){
 - return false;
 - }
 - if($isfilter){
 - return $this->filter_string($this->cookiedata[$key]);
 - }else{
 - return $this->cookiedata[$key];
 - }
 - }
 - //格式化数据
 - private function format_data($data){
 - $result = array();
 - if(!is_array($data)){
 - $data = array();
 - }
 - /*
 - *list()表示用数组的数值给变量赋值。只用于数字索引的数组,
 - *默认从0位开始,按顺序下去
 - *each()
 - */
 - while(list($key,$value) = each($data)){//不太明白
 - //处理checkbox之类的数据
 - if(is_array($value)){
 - $result[$key]=$value;
 - }else{//普通数据
 - $result[$key] = trim($value);
 - //删除字符串两端空白及其它预定义字符
 - }
 - }
 - }
 - //转化数字
 - private function to_num($num){
 - if(is_numeric($num)){
 - return intval($num);//将变量转为整数
 - }else{
 - return false;
 - }
 - }
 - //过换过滤字符串
 - private function filter_string($data){
 - if($data===null){
 - return false;
 - }
 - if(is_array($data)){
 - foreach($data as $k=>$v){
 - $data[$k] = htmlspecialchars($v,ENT_QUOTES);
 - //把一些预定义字符转化为html实体
 - }
 - return $data;
 - }else{//普通字符串
 - return htmlspecialchars($data,ENT_QUOTES);
 - }
 - }
 - }
 - ?>
 
希望本文所述对大家的php程序设计有所帮助。
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