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  1. <?php
  2. class Car{
  3.     public static function a(){
  4.        return 'hi';
  5.     }
  6. }
  7.  
  8. class Constants{
  9.     public static $use='Car';
  10. }
  11.  
  12. echo call_user_func( array( Constants::$use, 'a'));
  13. ?>
Success #stdin #stdout 0.01s 20520KB
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hi
https://ideone.com/SNU2Jp
language:
PHP (php 7.3.5)
created:
11 years ago
visibility:
public

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