Site Crashed U_ILLEGAL_ARGUMENT_ERROR in IntlDateFormatter

[pilou2]

Noting that the zcDate.php class is PHP version-specific, using strftime for PHP versions < 8.1 and using the IntlDateFormatter class (if that PHP extension is installed) otherwise.

I did not do detailed explanation as it was already explained few month ago but I made it backward compatible. It uses IntlDateFormatter (PHP >=5.3.0 with PECL >=1.0.0) if avialable as it is possible (although very rare) to remove this extension in PHP settings, then date_format (PHP >= 5.2.0) if not. Strftime % parameters are accepted as input parameters.
Compatibility should go back to ZenCart 1.3.9 although I did not test it and won't... This was made for Zencart 1.5.8 (PHP >= 7.3) and above anyway.

[wtfbbq]

post 7 by dr byte fixed this issue for me.

for those reading/searching on solution why php 8.1 and 8.2 white screens the site and php 8.0 works fine.
fresh install tested. 1.5.8a

[pixodaros]

My bad. Turns out 'en' alone isn't "valid" either. And that's what I had in my clipboard when I pasted. Doh!

EDITED: now recommending:

@setlocale(LC_TIME, ['en_US', 'en_US.UTF-8', 'en-US']);

Add this to the end of includes/configure.php and YOUR_ADMIN/includes/configure.php

That fix for a blank store with the log "Uncaught Error: Found unconstructed IntlDateFormatter" worked for me! I changed the two cofigure.php files and now both the customer-facing page and the admin page load on my test install.

[pixodaros]

My bad. Turns out 'en' alone isn't "valid" either. And that's what I had in my clipboard when I pasted. Doh!

EDITED: now recommending:

@setlocale(LC_TIME, ['en_US', 'en_US.UTF-8', 'en-US']);

Add this to the end of includes/configure.php and YOUR_ADMIN/includes/configure.php

That fixed worked for me when the customer-facing page and the admin page were both blank and the log listed an "Uncaught Error: Found unconstructed IntlDateFormatter". Thanks.