Can a method be used as an array_map function

php methods array-map
allyourcode picture allyourcode · Jul 3, 2009 · Viewed 41k times · Source

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?

Answer

Jani Hartikainen picture Jani Hartikainen · Jul 3, 2009

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

Related questions

Call methods of objects in array using array_map?

Suppose I have simple class like: class MyClass { private $_prop; public function getProp() {return $this->_prop;} [....] } Now what I want to do somwhere not in scope of MyClass is to get array of $_prop from array of objects of …

Read More
php - array map using public function callback within class

class something{ public function add_val( $val ){ $array = array(); foreach( $val as $value ) { $array[] = static::$post[${$value}]; } return $array; } pulblic function somethingelse(){ .... .... $optionsArray['value'] = array_map( 'add_val', array_chunk( $drop_val, count( $optionsArray['heading_x'] ) ) ); .... .... } } how can i call …

Read More
Calling a function within a Class method?

I have been trying to figure out how to go about doing this but I am not quite sure how. Here is an example of what I am trying to do: class test { public newTest(){ function bigTest(){ //Big Test Here } …

Read More