Multiply each value in array using array_map function

php arrays array-map

PHP Snippet 1:

$array_module_rate = array(
  '5',
  '3',
  '4'
}

$global_course = 5;

foreach($array_module_rate as $key=>$value){
   $array_module_rate[$key]=$global_course* $value;
}

PHP Snippet 2:

$array_module_rate = array(
  '5',
  '3',
  '4'
);

$global_course = 5;

array_map(function($cal) use($global_course) {
  return $cal * $global_course;
}, $array_module_rate);

PHP Snippet 3:

array_walk($array_module_rate, function(&$cal) use ($global_course) {
   $cal *= $global_course;
});

PHP Snippet 4:

var_export(
    array_map(fn($v) => $v * $global_course, $array_module_rate)
);

PHP Snippet 5:

array (
  0 => 25,
  1 => 15,
  2 => 20,
)