https://www.php.net/manual/en/langref.php

 https://www.php.net/manual/en/langref.php

Array map

 <?php

function cube($n, $r)

{

    return ($n * $n * $n) / $r;

}

$a = [1, 2, 3, 4, 5];

$c = [1, 2, 3, 4, 5];

$b = array_map('cube', $a, $c);

print_r($b);

?>

array filter

 $arr=[12,3,90,4];

function Myfunc($k){

return $k>80;

}

$result=array_filter($arr,"Myfunc",0);

  

  print_r($result);