Add support for @, magic constants in PHP web search

[BeeDee123]

The php.net website REALLY needs to be "fixed" (?) / enhanced
to make it easier (or even possible) to SEARCH for non-textual items
(non-alphanumeric), or textual items that contain non-alphanumeric characters.

For example, I just spent WAY too many minutes trying to find help
on the "At Sign" (@) prefix 'Error Control Operator'.

Or good luck finding help on "++", or "FILE",
or any of the other MANY items like them.

It's pretty ridiculous, really.

This has been a problem for DECADES. (afaik)

I would have thought it would have been corrected decades ago.

— Bill D.

[iansltx]

I think I found a solution.

[cmb69]

I have closed https://bugs.php.net/67624 and https://bugs.php.net/72545 in favor of this ticket.