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  1. <?php
  2. class Foo {
  3.  
  4. }
  5.  
  6. $foo = new Foo();
  7. $bar = Foo;
  8.  
  9. $fooEhInstancia = $foo instanceof Foo;
  10. $barEhInstancia = $bar instanceof Foo;
  11.  
  12. var_dump($fooEhInstancia);
  13. var_dump($barEhInstancia);
Success #stdin #stdout #stderr 0.01s 20520KB
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stdin
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Standard input is empty
stdout
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bool(true)
bool(false)
stderr
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PHP Notice:  Use of undefined constant Foo - assumed 'Foo' in /home/93alJb/prog.php on line 7
https://ideone.com/HG1n2P
language:
PHP (php 7.3.5)
created:
11 years ago
visibility:
public

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