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phpmethodsarray-map

Can a method be used as an array_map function

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?

Solution

  • 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