How to pass argument in callback function in php? -

i have repository class method follows:

public function getone($id){     $method = __method__;     $post = null;       $post = $this->cachemanager($method, function($id) {         return db::select("select * posts id = ?", [$id]);     });      return $post; } 

i want cache result, in closure/callback function $id parameter not working. cachemanager trait i'm using in repository.

   public function cachemanager($method, $fn) {         $obj = null;          if(!$this->hascache($method)){            $obj = $fn();         }         else {             $obj = $this->getcache($method);         }          return $obj;     } 

i have other methods without parameters , they're working intended.

use use. :d

with use clause, can import variables parent scope scope of function.

public function getone($id){     $method = __method__;     $post = null;       $post = $this->cachemanager($method, function() use ($id) {         return db::select("select * posts id = ?", [$id]);     });      return $post; } 

just side note. since looks building caching mechanism, need include id in cache well. check $method, each id have different cache entry may or may not exist. think in function need line below make cache key more unique. call parameter $method $cachekey instead, since cache shouldn't linked method name per se.

$method = __method__ . ";$id";