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  1. <?php
  2. function f1()
  3. {
  4. 	$first = 10;
  5. 	function f2()
  6. 	{
  7. 		$second = $first + 10;
  8. 		return $second;
  9. 	}
  10. 	$t = f2();
  11. 	return $t;
  12. }
  13. var_dump(f1());
Success #stdin #stdout #stderr 0.02s 24448KB
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stdin
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Standard input is empty
stdout
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int(10)
stderr
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PHP Notice:  Undefined variable: first in /home/la7rq7/prog.php on line 7
https://ideone.com/LecT2V
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
public

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