Description:
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Improve Search-box to show results for OPERATORs, KEYWORDs and MAGIC METHODs.

Search-box on PHP website (https://www.php.net/) doesn't work for OPERATORs, KEYWORDs and MAGIC METHODs.

eg. putting words below into the search-box doesn't work.
    ??           (OPERATOR)
    fn           (KEYWORDS)
    __construct  (MAGIC METHOD)

Above all, ORERATORs and MAGIC METHODs are under deep layers of PHP Manual.
So if users don't notice using Google search 
or it doesn't work like "??" operator, 
they cannot help but follow the links until they reach the right page in the deep layer of Manual.


Or another idea is to make a page of all PHP words with links often likely searched that includes all the functions, keywords, operators, magic methods, etc.

Test script:
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??
fn
__construct

Expected result:
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(Show appropriate page)

Actual result:
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"... doesn't exist. Closest matches: "