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  1. <?php
  2.  
  3. function add1($a) {
  4. 	return $a + 1;
  5. }
  6.  
  7. function mul0_5($a) {
  8. 	return $a * 0.5;
  9. }
  10.  
  11. function COMPOSE($f, $g) {
  12.   return function() use ($f,$g) {
  13.     $args = func_get_args();
  14.     return $g(call_user_func_array($f, $args));
  15.   };
  16. }
  17.  
  18. $compose1 = COMPOSE("add1", "mul0_5");
  19. $compose2 = COMPOSE("intval", $compose1);
  20.  
  21. printf("%f", $compose2("1"));
Success #stdin #stdout 0s 82560KB
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Standard input is empty
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1.000000
https://ideone.com/E41a8q
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
public

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