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  1. <?php
  2.  
  3. 	$bar = 10;
  4. 	$foo = 0;
  5.  
  6. 	$f = function() use ($bar,$foo) {
  7.  
  8. 		if($bar){ // condition needed to prevent infinite loop
  9. 			echo $bar-- . PHP_EOL;
  10. 			call_user_func(__FUNCTION__); // wont work
  11. 		}
  12. 	};
  13.     //$f(); this will fail
  14.  
  15.     echo "Function passed as argument" . PHP_EOL;
  16.  
  17. 	$bar = 10;
  18. 	$foo = 0;
  19.  
  20.     $f = function( $__FUNCTION__ = false ) use (&$bar, $foo) {
  21.  
  22.         if($__FUNCTION__ && $bar){
  23.             echo $bar-- . PHP_EOL;
  24. 			call_user_func( $__FUNCTION__, $__FUNCTION__);
  25.         }
  26.     };
  27.  
  28.    $f ( $f );
  29.  
  30.  
  31.    echo "Function passed via `use' statement" . PHP_EOL;
  32.  
  33. 	$bar = 10;
  34. 	$foo = 0;
  35.  
  36.     $__FUNCTION__ = function() use (&$bar, $foo, &$__FUNCTION__) {
  37.  
  38.         if($bar){
  39. 			echo $bar-- . PHP_EOL;
  40. 			call_user_func( $__FUNCTION__ );
  41.         }
  42.     };
  43.     $__FUNCTION__();
Success #stdin #stdout 0.01s 52488KB
comments (?)
stdin
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Standard input is empty
stdout
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Function passed as argument
10
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Function passed via `use' statement
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1
https://ideone.com/3Hhq36
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
public

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