Reading array and matching IDs and updating value - php

Question

So I am going to be as descriptive as possible with this and see if anyone is able to assist me in a small script that I am writing.
I have the following read_csv() function which outputs the following items:
enter image description here
function read_csv()
{
$options = [];
$csv = WPMU_PLUGIN_DIR . ('/files/Office.csv');
$handle = fopen($csv, 'r');
$include_headers = false;
if (empty($handle) === false) {
while (($data = fgetcsv($handle, 1000, ',')) !== false) {
if (!$include_headers) {
$include_headers[] = $data;
} else {
$options[] = $data;
}
}
fclose($handle);
}
return $options;
}
Now I have this function below and this is what I'm wanting to achieve:
Read the read_csv() function and get the IDs
Match the IDs to the get_post_meta($place->ID, '_id', true).
If the two IDs match, update_post_meta on 'map_url' post_meta.
All help will be appreciated!
var_dump($place_id) & var_dump($map_url) output the following - I need to match the $place_id to the $place_rows[0] and then update_post_meta on that post w/ $office_rows[2].
enter image description here
function match_ids()
{
$places = get_posts([
'post_status' => 'any',
'post_type' => 'places',
'posts_per_page' => -1,
]);
if ($places) {
$place_ids = [];
$place_rows = read_csv();
var_dump($place_rows);
foreach ($places as $key => $place) {
$place_id = get_post_meta($place->ID, '_id', true);
var_dump($place_id);
$map_url = get_post_meta($place->ID, 'map_url', true);
var_dump($map_url);
}
}
}

Answer 1

If I'm understanding you correctly, the below for loop should work as a replacement to what you have. I've included inline comments which hopefully make sense. I would recommend using the var_dump stuff as you were before, before actually using update_post_meta just in case I have a typo.
foreach ($places as $key => $place) {
$place_id = get_post_meta($place->ID, '_id', true);
// Find _all_ that match, which is hopefully either one or zero items
$place_row = array_filter(
$place_rows,
function($row) {
// Whenever I work with CSV files I like to use ?? just in case
// You could also just use == for a weaker comparison
return (int)$place_id === (int)($row[0] ?? null);
}
);
if(1 !== count($place_row)){
// Not sure what to do if something isn't found, or if too many?
continue;
}
// Grap the single array item
$place_row = reset($place_row);
// Whenever I work with CSV files I like to use ?? just in case
$map_url = $place_row[2] ?? null;
// Sanity check, just in case someone uploads a file with different columns
if (false === filter_var($map_url, FILTER_VALIDATE_URL)) {
// Not a value URL
continue;
}
update_post_meta($place->ID, 'map_url', $map_url);
}