Sergey Biryukov e720a9ddc7 Date/Time: Make get_permalink() more resilient against PHP timezone changes.
Overriding default PHP timezone with `date_default_timezone_set()`, while not recommended, should not inadvertently result in changing existing permalinks.

Add a unit test.

Props Rarst, steevithak, archon810, maciejmackowiak, Ov3rfly, Cybr, hometowntrailers, scvleon, miette49.
Fixes #48623.

git-svn-id: https://develop.svn.wordpress.org/trunk@46795 602fd350-edb4-49c9-b593-d223f7449a82
2019-11-28 13:40:19 +00:00
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