如何在不使用全局变量的情况下更改函数中的变量值

Question

I am using a pre-existing Laravel function from a class. I want to pass an array into it and get the updated values when the function has complete. Is there a way to do this without using global variables? Currently $counts is not updating outside of this function.

    $counts = array(
        'newly_added_count' => 0,
        'updated_count' => 0,
    );

    Excel::load( 'storage/exports/test.xls', function ( $reader ) use($counts) {
        $counts['newly_added_count'] = 100;
        $counts['updated_count'] =100;
    } );

Answer 1

You can use variable by reference, just pass it to use with &:

Excel::load( 'storage/exports/test.xls', function ( $reader ) use(&$counts) {
    $counts['newly_added_count'] = 100;
    $counts['updated_count'] =100;
} );