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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