thinkphp function I code optimization

thinkphp/common/common.php file

I function, mainly used to obtain some of the GPC request variables, the function is a part of the Code filter variables, run once each time, in fact, is not necessary.

If you call it this way every time: $a = i (' post.a '), $c = i (' post.b '), $c = i (' post.c '), and the filter function will filter the $_post data 3 times, considering that the function is frequently called and can be optimized.

Optimization scheme, add a static variable, the first run after the data storage, subsequent calls directly out of the can, the code is as follows:

By ZXM I modified the code part of function I ($name, $default = ", $filter =null) {Static $maps = array ();//by zxm if (Strpos ($name, '. ')    ) {//Specify the parameter source list ($method, $name) = Explode ('. ', $name, 2);    }else{//default is automatic judgment $method = ' param '; } if (!isset ($maps [$method])) {//by ZXM switch (strtolower ($method)) {case ' get ': $input =& $_ge        T;break;        Case ' post ': $input =& $_post;break;        Case ' put ': Parse_str (file_get_contents (' Php://input '), $input); Case ' param ': switch ($_server[' Request_method ')} {case ' POST ': $input = $_pos                T            Break                Case ' PUT ': Parse_str (file_get_contents (' Php://input '), $input);            Break            Default: $input = $_get; } if (C (' var_url_params ') && isset ($_get[c (' Var_url_params ')]) {$input = Array_merge ( $input, $_get[c (' Var_url_params ')]);           } break;   Case ' request ': $input =& $_request;            Break   Case ' Session ': $input =& $_session;            Break    Case ' cookie ': $input =& $_cookie;            Break    Case ' server ': $input =& $_server;            Break    Case ' globals ': $input =& $GLOBALS;            Break        Default:return NULL;        }//Global filter//array_walk_recursive ($input, ' filter_exp ');            if (c (' var_filters ')) {$_filters = explode (', ', C (' var_filters '));            foreach ($_filters as $_filter) {//Global parameter filter array_walk_recursive ($input, $_filter); }} $maps [$method] = $input;//by zxm}else{$input = $maps [$method];//by ZXM} if (Empty ($na         Me) {//Get all variables $data = $input;        $filters = Isset ($filter)? $filter: C (' default_filter '); if ($filters) {$filters = explode (', ', $filters);            foreach ($filters as $filter) {$data = Array_map ($filter, $data);//Parameter Filtering}}        }elseif (Isset ($input [$name])) {//Take value operation $data = $input [$name];        $filters = Isset ($filter)? $filter: C (' default_filter ');            if ($filters) {$filters = explode (', ', $filters); foreach ($filters as $filter) {if (function_exists ($filter)) {$data = Is_array ($data) ? Array_map ($filter, $data): $filter ($data);                     Parameter filtering}else{$data = Filter_var ($data, Is_int ($filter)? $filter: filter_id ($filter));                    if (false = = = $data) {return isset ($default)? $default: NULL;    }}}}}else{//variable default value $data = Isset ($default)? $default: NULL; } return $data;}

　　

thinkphp function I code optimization