Add support for @, magic constants in PHP web search

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.

El issue no menciona archivos, pruebas ni un punto de entrada de búsqueda. Empieza localizando la implementación de búsqueda web de php.net y cómo se tokenizan o indexan las consultas que contienen @, ++ y FILE. El trabajo estará terminado cuando esos ejemplos, junto con términos PHP similares no alfanuméricos, se puedan encontrar de forma fiable.