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Bug #80611 NumberFormatter appears to have broken in PHP 8.x.
Submitted: 2021-01-09 21:49 UTC Modified: 2021-07-18 04:22 UTC
From: kit dot soul at usweek dot net Assigned: cmb (profile)
Status: No Feedback Package: Output Control
PHP Version: 8.0.1 OS: Windows
Private report: No CVE-ID: None
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 [2021-01-09 21:49 UTC] kit dot soul at usweek dot net
NumberFormatter's formatCurrency() function no longer respects an empty currency symbol.

Output of test script in PHP 7.4.13 (Windows):

	string(6) "0.0043"

Output of test script in PHP 8.0.1 (Windows):

	string(11) "BTC 0.0043"

Conclusion: Something has changed.

I cannot find any mention whatsoever of PHP 8 here:

I asked it here but nobody can even reproduce it (possibly because they don't use Windows?):

Test script:
$a = new \NumberFormatter('en_US', \NumberFormatter::CURRENCY);
$a->setAttribute(\NumberFormatter::MAX_FRACTION_DIGITS, 8);
$a->setSymbol(NumberFormatter::CURRENCY_SYMBOL, ''); // It's empty because I want it "minimal" for a table cell.
var_dump($a->formatCurrency(0.0043, 'BTC'));


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 [2021-01-11 18:44 UTC]
That is apparently an upstream issue; when building PHP 8.0 with
ICU 66.1 everything works as expected, but with ICU 67.1 the issue
is reproducible.  It is not particularly related to BTC (that
currency is only supported as of ICU 68.1), but also reproduces
with EUR, for instance.  It is also not related to an empty string
as currency symbol, but shows with '$' as well.
 [2021-07-06 16:20 UTC]
-Status: Open +Status: Feedback -Assigned To: +Assigned To: cmb
 [2021-07-06 16:20 UTC]
Have you considered to report that upstream[1]?

[1] <>
 [2021-07-18 04:22 UTC] php-bugs at lists dot php dot net
No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Re-Opened". Thank you.
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