The example in this article describes the PHP input data unified class. Share it with everyone for your reference. The details are as follows:
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class cls_request{ private $getdata;//Storage get data private $postdata;//Storage post data private $requestdata;//Storage request data private $filedata;//Storage file data private $cookiedata;//Storage cookie static $_instance;//Instance of this class
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); } //Initialization of class, return cls_request object public static function get_instance(){ if(!(self::$_instance instanceof self)){ self::$_instance = new self(); } return self::$_instance; } //Get the numerical variable passed by GET public function get_num($key){ if(!isset($this->getdata[$key])){ return false; } return $this->to_num($this->getdata[$key]); } //Get the data variables passed by POST public function post_num($key){ if(!isset($this->postdata[$key])){ return false; } return $this->to_num($this->postdata[$key]); } //Get the numerical variable passed by Request public function request_num($key){ if(!isset($this->requestdata[$key])){ return false; } return $this->to_num($this->requestdata[$key]); } //Get the numerical variable passed by Cookie public function cookie_num($key){ if(!isset($this->cookiedata[$key])){ return false; } return $this->to_num($this->cookiedata[$key]); } //Get the numerical variable passed by File public function filedata($key){ return $this->filedata[$key];//return array } //Get the string variable passed by GET 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]; } } //Get the string variable passed by POST 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]; } } //Get the string variable passed by Request 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]; } } //Get the string variable passed by Cookie 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]; } } //Format data private function format_data($data){ $result = array(); if(!is_array($data)){ $data = array(); } /* *list() means assigning values to variables using array values. For numerically indexed arrays only, *Start from 0 by default and proceed in order *each() */ while(list($key,$value) = each($data)){//I don’t quite understand //Process data such as checkbox if(is_array($value)){ $result[$key]=$value; }else{//Normal data $result[$key] = trim($value); //Delete blanks and other predefined characters at both ends of the string } } } //Conversion numbers private function to_num($num){ if(is_numeric($num)){ return intval($num);//Convert the variable to an integer }else{ return false; } } //Replace filter string 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); //Convert some predefined characters into html entities } return $data; }else{//Common string return htmlspecialchars($data,ENT_QUOTES); } } } ?> |
I hope this article will be helpful to everyone’s PHP programming design.