PHP/resource/stream: Difference between revisions
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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. | 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== | ==Tentative Conclusions== | ||
* If a stream is set to blocking mode (with <code> | * If a stream is set to blocking mode (with <code>{{l/pfx|PHP/fx/|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: | ** Questions about how it works in non-blocking mode: | ||
*** How do we detect EoS in ''non''-blocking mode? | *** How do we detect EoS in ''non''-blocking mode? | ||
**** [https://www.php.net/manual/en/stream.constants.php#constant.stream-notify-completed STREAM_NOTIFY_COMPLETED] (as used by | **** [https://www.php.net/manual/en/stream.constants.php#constant.stream-notify-completed STREAM_NOTIFY_COMPLETED] (as used by <code>{{l/pfx|PHP/fx/|stream_notification_callback}}()</code>) seems possibly relevant here. | ||
*** Does empty-string still correctly signal that the process has completed? | *** 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? | *** What happens if the process has ''not'' completed (so there's no new data yet) -- how can we tell that there might be more? | ||
Revision as of 18:03, 10 February 2026
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
Template:L/pfx(Template:Arg, TRUE);), 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?
- STREAM_NOTIFY_COMPLETED (as used by
Template:L/pfx()) seems possibly relevant here.
- STREAM_NOTIFY_COMPLETED (as used by
- 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?
- How do we detect EoS in non-blocking mode?
- Questions about how it works in non-blocking mode:
