View source for PHP/resource/stream

{{fmt/title|stream-type "resource" demiobjects in PHP}}
==About==
Although there are a lot of functions that handle streams in PHP, how to properly use these functions is often not explained very well. I'm having to reverse-engineer a lot through trial and error.
==Tentative Conclusions==
* If a stream is set to blocking mode (with <code>[https://www.php.net/manual/en/function.stream-set-blocking.php stream_set_blocking]({{arg|stream resource}}, TRUE);</code>), then EoS (end-of-stream) is indicated by the return of an empty string.
** Questions about how it works in non-blocking mode:
*** How do we detect EoS in ''non''-blocking mode?
*** Does empty-string still correctly signal that the process has completed?
*** What happens if the process has ''not'' completed (so there's no new data yet) -- how can we tell that there might be more?
==Links==
===Official===
* [https://www.php.net/manual/en/ref.stream.php Stream Functions]