Sergey Biryukov 89a3b0e9f2 Bootstrap/Load: Check that either mysqli_connect() or mysql_connect() is available. ...

This resolves a fatal error and displays an actionable message if the `mysqli` PHP extension is missing.

Previously, `wp_check_php_mysql_versions()` performed an early check whether `mysql`, `mysqli`, or `mysqlnd` extensions are loaded, but that did not work if the `mysqlnd` extension is the only one present.

Checking specifically for `mysqli_connect()` or `mysql_connect()` functions should be a more reliable approach and more closely mirrors the existing checks in the `wpdb` class.

Follow-up to [1955], [4489], [7234], [12732], [19760], [27257], [36434].

Props bgin, desrosj, dimadin, ipajen, hellofromTonya, sc0ttkclark, azaozz, SergeyBiryukov.
Fixes #51988.
Built from https://develop.svn.wordpress.org/trunk@55367


git-svn-id: http://core.svn.wordpress.org/trunk@54900 1a063a9b-81f0-0310-95a4-ce76da25c4cd

2023-02-20 16:05:19 +00:00

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