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  1. <?php
  2.  
  3. class A {
  4. 	public $_tst;
  5. 	public $_cb;
  6.  
  7.         function __construct () {
  8.  
  9.  
  10. 		$this->_cb = function($x) {
  11. 			return 10;
  12. 		};
  13.  
  14. 	}
  15.  
  16. 	function __call($n, $v) {
  17. 		if ($n === 'cb') {
  18. 			return call_user_func($this->_cb, $v);
  19. 		}
  20. 	}
  21.  
  22. 	function __set($n, $v) {
  23. 		if ($n === 'tst') {
  24. 			$this->_tst = $this->cb($v);
  25. 		}
  26. 		if ($n === 'cb') {
  27. 			$this->_cb = $v;
  28. 		}
  29. 	}
  30.  
  31. 	function run() {
  32. 		echo $this->_tst . "\n";
  33. 	}
  34. }
  35.  
  36. $a = new A();
  37.  
  38. $a->tst = 30;
  39.  
  40. $a->run();
  41.  
  42. $a->cb = function() {return 50;};
  43.  
  44. $a->tst = 70;
  45.  
  46. $a->run();
Success #stdin #stdout 0.04s 23536KB
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10
50
https://ideone.com/anBdd4
language:
PHP (php 7.3.5)
created:
5 years ago
visibility:
public

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