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  1. <?php
  2.  
  3. // your code goes here
  4. class single {
  5. 	public static function kansu() {
  6. 		static $singleton;
  7. 		if(!isset($singleton)) {
  8. 			 $singleton=new single();
  9. 		}
  10. 		return  $singleton;
  11. 	}
  12. 	private function __constructor() {
  13. 		// nop
  14. 	}
  15. }
  16.  
  17. $hensu1 = single::kansu();
  18. $hensu2 = single::kansu();
  19.  
  20. if($hensu1 === $hensu2) {
  21.     print "一致する";
  22. } else {
  23.     print "一致しない";
  24. }
  25.  
Success #stdin #stdout 0.02s 23628KB
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Standard input is empty
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一致する
https://ideone.com/C6vDkM
language:
PHP (php 7.3.5)
created:
6 years ago
visibility:
public

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