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  1. <?php
  2.  
  3. // your code goes here
  4.  
  5. class News
  6. {
  7.     public function exec($a)
  8.     {
  9.         return $this->$a();
  10.     }
  11.  
  12.     public function foo() 
  13.     {
  14.         return 'foo';
  15.     }
  16.  
  17.     public function test() 
  18.     {
  19.         return 'test';
  20.     }
  21. }
  22.  
  23. try {
  24.     $news = new News();
  25.     echo $news->exec('foo1');
  26. } catch (Throwable $e) {
  27.     var_dump($e);
  28. }
Success #stdin #stdout 0.02s 24560KB
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stdin
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Standard input is empty
stdout
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object(Error)#2 (7) {
  ["message":protected]=>
  string(37) "Call to undefined method News::foo1()"
  ["string":"Error":private]=>
  string(0) ""
  ["code":protected]=>
  int(0)
  ["file":protected]=>
  string(21) "/home/uTtaKi/prog.php"
  ["line":protected]=>
  int(9)
  ["trace":"Error":private]=>
  array(1) {
    [0]=>
    array(6) {
      ["file"]=>
      string(21) "/home/uTtaKi/prog.php"
      ["line"]=>
      int(25)
      ["function"]=>
      string(4) "exec"
      ["class"]=>
      string(4) "News"
      ["type"]=>
      string(2) "->"
      ["args"]=>
      array(1) {
        [0]=>
        string(4) "foo1"
      }
    }
  }
  ["previous":"Error":private]=>
  NULL
}
https://ideone.com/oEepCa
language:
PHP (php 7.3.5)
created:
5 years ago
visibility:
public

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