Peter Wilson 5703931172 Options: Show error when updating all options exceeds max_input_vars.
On sites with a large number of options, the number of inputs when saving all options via the /wp-admin/options.php page may exceed PHP's `max_input_vars` setting, this will prevent saving.

An error is now shown if this is the case.

Props ishitaka, jorbin, maguijo, pento, sergeybiryukov. 
Fixes #45438.

Built from https://develop.svn.wordpress.org/trunk@53151


git-svn-id: http://core.svn.wordpress.org/trunk@52740 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2022-04-12 06:07:08 +00:00
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