ID: 34972
Comment by: frase at cs dot wisc dot edu
Reported By: VJTD3 at VJTD3 dot com
Status: Assigned
Bug Type: Streams related
Operating System: win32 only
PHP Version: 5.2CVS-2008-07-15
Assigned To: pajoye
New Comment:
I'm having the same trouble.
With php-5.3.0-beta1 on Linux it works fine, both on STDIN and on
fopen('/dev/ttyS0'). stream_set_blocking() returns true,
stream_get_meta_data() confirms, and the stream behaves as if
non-blocking.
But with php-5.2.9 on Windows 2000 it doesn't work for either STDIN or
the serial port (COM1 instead of /dev/ttyS0). stream_set_blocking()
returns false, stream_get_meta_data() shows blocking, and the streams do
in fact block. I also tried stream_set_timeout() with a tiny value, to
simulate the effect, but that also returns false and doesn't work.
Previous Comments:
------------------------------------------------------------------------
[2008-10-24 16:11:54] [email protected]
Assigned to the windows port maintainer.
------------------------------------------------------------------------
[2008-03-15 10:57:09] VJTD3 at VJTD3 dot com
on *nix it seems to be solved.
easy way to test:
php -r "stream_set_blocking(STDIN, FALSE);echo fread(STDIN, 10);"
on *nix it instantly exits. (correct behavior)
on windows it will hang for input. (incorrect behavior, it's ignoring
the non blocking setting.)
tested on 5.2.5
------------------------------------------------------------------------
[2007-08-19 20:51:34] donnyk at gmail dot com
i also have the same problem, i've tried the latest snapshot on windows
to no avail. It works on my linux systems however.
------------------------------------------------------------------------
[2007-08-10 13:01:48] VJTD3 at VJTD3 dot com
<?php
stream_set_blocking(STDIN, FALSE);
echo fread(STDIN, 10);
?>
notice how it just sits there? (blocking) it should exit instantly with
a null echo. (same as a tcp connection where if you just do a read that
is too fast with nonblocking it never gets a chance to fetch the data.)
what is happening is that php is blocking waiting for input
(specifically enter (line ending))
problem:
if you are echoing debug information and want to use key functionality
in tandem you can't because everything is blocked till you hit enter.
------------------------------------------------------------------------
[2006-03-27 14:12:28] VJTD3 at VJTD3 dot com
error in last message, "stream_select()" was ment.
code using "stream_select()" that still blocks:
<?php
set_time_limit('0');
# note for php4 or lower STDIN isn't a defined "constant".
if (version_compare(phpversion(), '5.0.0', '<')) {
define('STDIN', fopen('php://stdin', 'r'));
}
for ($i=1;$i<11;$i++) {
unset($read);
$read[] = STDIN;
stream_select($read, $write = null, $except = null, $tv = 0);
if (count($read)) {
$data4 = @fread(STDIN, 1500);
$data4 = str_replace("\r\n", "\n", $data4);
$data4 = str_replace("\n\r", "\n", $data4);
$data4 = str_replace("\r", "\n", $data4);
$data4 = str_replace("\n", '', $data4);
}
echo 'pass: '.$i.' -> data: '.(strlen(@$data4) ? $data4 :
'empty')."\n";
unset($data4);
sleep('1');
}
?>
the second you type/click a arrow key/anything it goes into blocking
mode again.
------------------------------------------------------------------------
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the rest of the comments, please view the bug report online at
http://bugs.php.net/34972
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Edit this bug report at http://bugs.php.net/?id=34972&edit=1
