Question

How to applying a function to each element of nested array in PHP

Answer 1

$array = array(1, array(2, 3, array(4, 5, 6), 7));

array_walk_recursive($array, function($value, $key) {
    echo $value * 2 . ' ';
});
 
  
/*
run:
   
2 4 6 8 10 12 14 
   
*/

 

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