index array with braces rather than unsupported curly braces

Changes according to revisions in https://github.com/moisesbr-dw/dokuwiki/pull/2

Many minor details and use of Sort::xyz() instead of intl_xyz() in files outside the "inc" folder.

Authorization plugins

[enhancement] group sorting in authplain

make adLDAP function public again. #1616

It seems some update of the adLDAP library made a crucial function
protected, thus breaking the authad plugin.

This just makes the function public again, wh

make adLDAP function public again. #1616

It seems some update of the adLDAP library made a crucial function
protected, thus breaking the authad plugin.

This just makes the function public again, which should fix the
immeadiate problem. A proper fix would need to do #1553 as well

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Fixed broken links to php.net and redirecting pages to php.net