- var_dump: documentation ( source)
- is_callable: documentation ( source)
<?php
class Test {
public $cb;
public function __construct() {
// $this->cb is callable here
$this->cb = [$this, 'method'];
var_dump(is_callable($this->cb));
}
private function method() {}
}
$obj = new Test;
// $obj->cb is NOT callable here
var_dump(is_callable($obj->cb));