php - How to use variables in callback functions? -


(how) is it possible to use a variable within a callback function? For example, I want to use the $ add variable inside my callback function: 

  private function addToWord ($ add) {return preg_replace_callback ('/ ([Az]) + / i ', function ($ word, $ add) {return word $. $ Add;}, $ this- & gt; text); }    
 
 
 You can use here:  
  Private function addToWord ($ add) {return preg_replace_callback ('/ ([az]) + / i', function ($ word) usage ($ add) {return $ word [1]. $ Add;}, $ this- & Gt; text); }

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