ID: 34972
Comment by: donnyk at gmail dot com
Reported By: VJTD3 at VJTD3 dot com
Status: Open
Bug Type: Streams related
Operating System: *
PHP Version: php5.1-200603270630
Assigned To: wez
New Comment:
i also have the same problem, i've tried the latest snapshot on windows
to no avail. It works on my linux systems however.
Previous Comments:
[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.
[2007-07-25 01:00:00] php-bugs at lists dot php dot net
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to Open.
[2007-07-17 14:28:03] [EMAIL PROTECTED]
Please try using this CVS snapshot:
http://snaps.php.net/php5.2-latest.tar.gz
For Windows (zip):
http://snaps.php.net/win32/php5.2-win32-latest.zip
For Windows (installer):
http://snaps.php.net/win32/php5.2-win32-installer-latest.msi
I can't reproduce this (or very likely didn't understand the problem :)
[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 ($i=1;$i11;$i++) {
unset($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.
[2006-03-27 13:32:01] VJTD3 at VJTD3 dot com
bug #36030 is very similar to my bug, they might be related.
It looks like anything to STDIN (reguardless of access method like
php://stdin and constant('STDIN') and STDIN are all effected.)
When doing anything, be it select, timeout, or anything to monitor
the resource where a window is set (ie to timeout the blocking, set
nonblocking, or similar.) the input stalls (it's not really a stall,
it's just waiting for the input.) or fails (such as timeout setting that
fails and returns false.)
Tested on:
php4-STABLE-200603270430
php5.1-200603270630
php6.0-200602191730
Also tested as well on their *nix snaps version and all with the same
result. (blocking when they should not be blocking.)
Better code to make debugging easier and includes examples from
suggestions that don't work:
?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'));
}
echo 'notice how the data loads unblocked reguardless if there is
data.'.\n;
$demo1 = @fsockopen('yahoo.com', 80, $errno, $errstr, 60);
stream_set_blocking($demo1, FALSE);
fwrite($demo1, 'GET /'.\n\n);
for ($i=1;$i11;$i++) {
$data1 = @fread($demo1, 1500);
$data1 = str_replace(\r\n, \n, $data1);
$data1 = str_replace(\n\r, \n, $data1);
$data1 = str_replace(\r, \n, $data1);
$data1 = str_replace(\n, '', $data1);
echo 'pass: '.$i.' - data: '.(strlen($data1) ? $data1 :
'empty').\n;
sleep('1');
}
echo 'notice how the data loads unblocked and clearly there is no data
because this IP is invalid to connect to.'.\n;
$demo2 = @fsockopen('0.0.0.0', 80, $errno, $errstr, 1);
stream_set_blocking($demo2, FALSE);
for ($i=1;$i11;$i++) {
# this is expected to be a invalid resource.
$data2 = @fread($demo2, 1500);
$data2 = str_replace(\r\n, \n, $data2);
$data2 = str_replace(\n\r, \n, $data2);
$data2 = str_replace(\r, \n, $data2);
$data2 = str_replace(\n, '', $data2);
echo 'pass: '.$i.' - data: '.(strlen($data2) ? $data2 :
'empty').\n;
sleep('1
