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PHP anonymous functions and closures

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  1. <?php
  2.  
  3. $multiply = function($multiplier)
  4. {
  5.     return function($x) use ($multiplier)
  6.     {
  7.         return $x * $multiplier;
  8.     };
  9. };
  10.  
  11. // $mul5 now contains a function that returns a number multiplied by 5
  12. $mult5 = $multiply(5);
  13.  
  14. // $mul7 contains a function that returns a number multiplied by 7
  15. $mult7 = $multiply(7);
  16.  
  17. echo $mult5(5);
  18. echo $mult7(5);
  19.  
  20. // Output-
  21. // 25
  22. // 35
  23.  
  24. ?>

URL: http://www.codediesel.com/php/anonymous-functions-in-php

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