Passing object method to array_map() [duplicate] - php

Question

This question already has answers here:
How to use class methods as callbacks
(5 answers)
Closed 3 months ago.
class theClass{
function doSomeWork($var){
return ($var + 2);
}
public $func = "doSomeWork";
function theFunc($min, $max){
return (array_map(WHAT_TO_WRITE_HERE, range($min, $max)));
}
}
$theClass = new theClass;
print_r(call_user_func_array(array($theClass, "theFunc"), array(1, 5)));
exit;
Can any one tell what i can write at WHAT_TO_WRITE_HERE, so that doSomeWork function get pass as first parameter to array_map. and code work properly.
And give out put as
Array
(
[0] => 3
[1] => 4
[2] => 5
[3] => 6
[4] => 7
)

Answer 1

To use object methods with array_map(), pass an array containing the object and the objects method name. For same-object scope, use $this as normal. Since your method name is defined in your public $func property, you can pass func.
As a side note, the parentheses outside array_map() aren't necessary.
return array_map( [$this, 'func'], range($min, $max));

Answer 2

The following code provides an array of emails from an $users array which contains instances of a class with a getEmail method:
if(count($users) < 1) {
return $users; // empty array
}
return array_map(array($users[0], "getEmail"), $users);

Answer 3

I tried search for solution but it not works, so I created custom small map function that will do the task for 1 variable passed to the function it simple but will act like map
class StyleService {
function check_css_block($str){
$check_end = substr($str,-1) == ';';
$check_sprator = preg_match_all("/:/i", $str) == 1;
$check_sprator1 = preg_match_all("/;/i", $str) == 1;
if ( $check_end && $check_sprator && $check_sprator1){
return $str;
} else {
return false;
}
}
function mymap($function_name, $data){
$result = array();
$current_methods = get_class_methods($this);
if (!in_array($function_name, $current_methods)){
return False;
}
for ($i=0; $i<count($data); $i++){
$function_result = $this->{$function_name}($data[$i]);
array_push($result, $function_result);
}
return $result;
}
function get_advanced_style_data($data)
{
return $this->mymap('check_css_block', $data);
}
}
this way you can call a function name as string $this->{'function_name'}() in php