Adding together results of numbers from a WP_Query - php

Question

I've got a custom post type in Wordpress, each post within it has a custom Number field (through Advanced Custom Posts).
When the page loads, I'm performing a query to find all the records that match these args:
$args = array(
'post_type' => 'hunters',
'posts_per_page' => -1,
'orderby' => 'title',
'order' => 'ASC' ,
'meta_key'=> 'full_ name',
'meta_value'=> $email,
'meta_key'=> 'w3w_location_hit',
'meta_value'=> $w3w
);
$loop = new WP_Query( $args );
I'd like to get the value of code_checks from each record returned in the query and add them all together as a total number - i.e. "there were N code checks made in total" on the page. Is there a way to get each separate value into an array and them add them together, please?
Thank you.

Answer 1

You don't even need to put them into an array - Something like this should work:
// set code checks back to 0
$code_checks = 0;
$args = array(
'post_type' => 'hunters',
'posts_per_page' => -1,
'orderby' => 'title',
'order' => 'ASC' ,
'meta_key'=> 'full_ name',
'meta_value'=> $email,
'meta_key'=> 'w3w_location_hit',
'meta_value'=> $w3w
);
$loop = new WP_Query( $args );
while ( $loop->have_posts() ) {
// get code checks in this iteration
$number = get_field('code_checks');
// add this iteration to total
$code_checks = $code_checks + $number;
}
// echo total
echo 'There were ' . $code_checks . ' checks made in total';
/* Restore original Post Data */
wp_reset_postdata();