php oop call method from inside the method from the same class -

i've got following issue

class class_name {  function b() {    // }  function c() {     function a() {        // call function b();    }  }  } 

when call function usual: $this->b(); error: using $this when not in object context in c:...

function b() declared public

any thoughts?

i'll appreciate help

thanks

the function a() declared inside method c().

<?php  class class_name {   function b() {     echo 'test';   }    function c() {    }    function a() {     $this->b();   } }  $c = new class_name; $c->a(); // outputs "test" "echo 'test';" call above. 

example using function inside method (not recommended)

the reason why original code wasn't working because of scope of variables. $this available within instance of class. function a() not longer part of way solve problem pass instance variable class.

<?php  class class_name {   function b() {     echo 'test';   }    function c() {     // function belongs inside method "c". accepts single parameter meant instance of "class_name".     function a($that) {       $that->b();     }      // call "a" function , pass instance of "$this" reference.     a(&$this);   } }  $c = new class_name; $c->c(); // outputs "test" "echo 'test';" call above.