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@ 2014-10-25T11:07:30Z

<?php

class A {
      
      
        
        	private $x;
      
      
        
        	
      
      
        
        	public function __construct($v) {
      
      
        
        		$this->x = $v;
      
      
        
        	}
      
      
        
        	
      
      
        
        	public function getIncrementor() {
      
      
        
        		return function() { return ++$this->x; };
      
      
        
        	}
      
      
        
        }
      
      
        
        

      
      
        
        $a = new A(0);
      
      
        
        $b = new A(10);
      
      
        
        

      
      
        
        $ca = $a->getIncrementor();
      
      
        
        $cb = $ca->bindTo($b);
      
      
        
        $cb2 = Closure::bind($ca, $b);
      
      
        
        

      
      
        
        var_dump($ca());
      
      
        
        var_dump($cb());
      
      
        
        var_dump($cb2());

var_dump: documentation ( source)

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