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https://benedikt.gr/posts/2019-12-01-php-money-format-to-number_formatter/
https://stackoverflow.com/questions/294865/how-do-i-format-a-number-to-a-dollar-amount-in-php
<?php
$f = new NumberFormatter("en", NumberFormatter::CURRENCY);
// where 12345 is your variable
// reuse this $f object as many times as necessary
$f->formatCurrency(12345, "USD"); // Outputs "$12,345.00"