PHP input data Unified class Instance _php tutorial

PHP input data Uniform class instance

This article mainly introduces the PHP input data unified class, example analysis of the input data for various conversion skills, with a certain reference value, the need for friends can refer to the following

This article describes the PHP input data unification class. Share to everyone for your reference. Specific as follows:

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Class cls_request{ private $getdata;//store data for Get private $postdata;//Store post data private $requestdata;//store data for request private $filedata;//Store file data private $cookiedata;//Storage Cooki Static $_instance;//instances 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); } Initializes the class, returning the Cls_request object public static function Get_instance () { if (! ( Self::$_instance instanceof Self)) { Self::$_instance = new self (); } return self::$_instance; } Gets the numeric variable passed over by get Public Function Get_num ($key) { if (!isset ($this->getdata[$key])) { return false; } return $this->to_num ($this->getdata[$key]); } Gets the data variable that the post passed over Public Function Post_num ($key) { if (!isset ($this->postdata[$key])) { return false; } return $this->to_num ($this->postdata[$key]); } Gets the value variable passed by the request. Public Function Request_num ($key) { if (!isset ($this->requestdata[$key])) { return false; } return $this->to_num ($this->requestdata[$key]); } Get the numeric variables that the cookie passes over Public Function Cookie_num ($key) { if (!isset ($this->cookiedata[$key])) { return false; } return $this->to_num ($this->cookiedata[$key]); } Gets the numeric variable passed by the file. Public Function Filedata ($key) { return $this->filedata[$key];//returns an array } Gets the string variable passed over 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]; } } Gets the string variable that the post passed over 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]; } } Gets the string variable that the request passed over 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]; } } Gets the string variable passed by the 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]; } } Formatting data Private Function Format_data ($data) { $result = Array (); if (!is_array ($data)) { $data = Array (); } /* *list () indicates that the variable is assigned a value using the value of the array. Arrays that are used only for numeric indexes, * Starting from 0 bits by default, go in order *each () */ while (list ($key, $value) = each ($data)) {//Not quite understand Working with data such as a checkbox if (Is_array ($value)) { $result [$key]= $value; }else{//General Data $result [$key] = Trim ($value); Remove whitespace and other predefined characters at both ends of a string } } } Conversion numbers Private Function To_num ($num) { if (Is_numeric ($num)) { Return Intval ($num);//convert variable to Integer }else{ return false; } } Swap 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 pre-defined characters into HTML entities } return $data; }else{//Ordinary String Return Htmlspecialchars ($data, ent_quotes); } } } ?>

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