Instantiate a class object and call one of its methods

Question

I have multiple dimension arrays containing various values and would like to bring up the appropriate array or $profile based of the users input into a HTML form.

I have started using array_map , array_filter and closure but I'm am only new to them all so I would very much appreciate an explanation alongside your code solution to help me learn. I know there are a lot of similar questions to this but I can't seem to make sense of them.

<?php
$profileArray = array( 
array(  'Name' => "Toby",
        'Age' => 3, 
        'Gender' => "Male",
        ),

array(  'Name' => "Cassie",
        'Age' => 3, 
        'Gender' => "Female", 
        ),

array(  'Name' => "Lucy",
        'Age' => 1, 
        'Gender' => "Female", 
        ),

);

$profiles = $profileArray[1][2][3];

class profileFilter {

function get_profile_by_age ($profiles, $age){
    return array_filter ($profiles, function($data) use ($age){
    return $data->age === $age;
    });    
}
}
var_dump (get_profile_by_age ($profiles, 3));

When I try this in my browser I get a syntax error on var_dump

EDIT: I have fixed suggested syntax errors but still no luck. Am I calling my array correctly? I feel like I am missing a step or syntax there too.

Answer 1

// meaningless line
// $profiles = $profileArray[1][2][3];

// i don't understand for what purpose you create a class, 
// but if do, declare function as static 
// or create an object and call it by obj->function
class profileFilter {

static function get_profile_by_age ($profile, $age){
    return array_filter ($profile, function($data) use ($age){
    // $data is arrray of arrays, there is no objects there
    return $data['Age'] === $age;
    });    
}
}
var_dump (profileFilter::get_profile_by_age ($profileArray , 3));
//  now it works