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:
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<?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。