Can a method be used as an array_map function

user_62163 0
Viewed 46262

I want to do something like this:

class Cls {
  function fun($php) {
    return 'The rain in Spain.';
  }
}

$ar = array(1,2,3);
$instance = new Cls();
print_r(array_map('$instance->fun', $ar));
               // ^ this won't work

but the first argument to array_map is supposed to be the name of the function. I want to avoid writing a wrapper function around $instance->fun, but it doesn't seem like that's possible. Is that true?

array-map methods php
4 Answers

Yes, you can have callbacks to methods, like this:

array_map(array($instance, 'fun'), $ar)

see the callback type in PHP's manual for more info

user_1068620

It worked for me as follows

<?php
class ExcelAutoFilterController extends Controller
{
    public function transpose($value):array
        {
            return [$value];
        }

        public function generateExcelDropdownDownload($file = 'helloWorld.xlsx')
        {

            $countries = [0 => "Algeria"1 => "Angola"2 => "Benin"3 => "Botswana"4 => "Burkina"5 => "Burundi"6 => "Cameroon"7 => "Cape Verde"8 => "Central African Republic"9 => "Chad"10 => "Comoros"11 => "Congo"12 => "Congo, Democratic Republic of"13 => "Djibouti"14 => "Egypt"15 => "Equatorial Guinea"16 => "Eritrea"17 => "Ethiopia"18 => "Gabon"19 => "Gambia"20 => "Ghana"21 => "Guinea"22 => "Guinea-Bissau"23 => "Ivory Coast"24 => "Kenya"25 => "Lesotho"26 => "Liberia"27 => "Libya"28 => "Madagascar"29 => "Malawi"30 => "Mali"31 => "Mauritania"32 => "Mauritius"];

            $countries = array_map('self::transpose', $countries);
        }
user_137795740
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