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  1. <?php
  2.  
  3. function generator($start, $step) {
  4. 	if (func_num_args() == 1) {
  5. 		$step = 1;
  6. 	}
  7.  
  8. 	return function() use (&$start, $step) {
  9. 		return $start += $step;
  10. 	};
  11. }
  12.  
  13. $counter = generator(2);
  14.  
  15. echo $counter();
  16. echo $counter();
  17. echo $counter();
Success #stdin #stdout #stderr 0.01s 20568KB
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stdin
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Standard input is empty
stdout
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345
stderr
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PHP Warning:  Missing argument 2 for generator(), called in /home/ZaYgyz/prog.php on line 13 and defined in /home/ZaYgyz/prog.php on line 3
https://ideone.com/DXWK60
language:
PHP (php 7.3.5)
created:
10 years ago
visibility:
public

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