Question

How sum array items with array_reduce() in PHP

Answer 1

$n = array_reduce([1, 2, 3, 4, 5], function($sum, $item) {
    echo $sum . '+' . $item . "<br />";
    return $sum + $item;
});

echo $n;
 
  
/*
run:
   
+1
1+2
3+3
6+4
10+5
15
   
*/

 

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