If I input infoおおお@test.com as billing email address, automatically change to info@test.com by sanitize_email function.
So at first check the email address by is_email function, after that we must use sanitize_email function.
In case no tax rate is specified for the default catch-all tax rate, the tax rate was an empty string which caused a PHP notice when it was later used in arithmetic operations.
Doing this to protect against the fatal error reported in issue #20880. I was not able to reproduce this problem but adding this check is probably a good idea anyway.
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* [x] Have you checked to ensure there aren't other open [Pull Requests](../../pulls) for the same update/change?
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### Changes proposed in this Pull Request:
Re-indexing `get_available_variations` method values.
Suppose you made changed with `woocommerce_available_variation` hook and skip returning some specific variation product with false value. There is `array_filter` function to filter empty values from `get_available_variations` but it keeps index which convert to js object rather then array on `single-product/add-to-cart/variable.php` template variation form `data-product_variations` attribute, and select box dropdown doesn't show. I just added `array_values` PHP function to reindex after `array_filter` function which convert to js array rather then js object before `get_available_variations` function return.
Closes # .
### How to test the changes in this Pull Request:
1. Before approving pull req just return false on a specific variation via `woocommerce_available_variation` filter.
2. Now check that variation product dropdown doesn't show. Because it needs to reindex array.
### Other information:
* [x] Have you added an explanation of what your changes do and why you'd like us to include them?
* [ ] Have you written new tests for your changes, as applicable?
* [x] Have you successfully ran tests with your changes locally?
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### Changelog entry
> Enter a short summary of all changes on this Pull Request. This will appear in the changelog if accepted.
Claudiu Lodromanean
Shohei Tanaka
Adrian Jagusch
Gerhard Potgieter
Peter Fabian
Kanishk
Claudio Sanches
Rodrigo Primo
Brent Shepherd
LuigiPulcini
Khan M Rashedun-Naby
Emran Ahmed