ID: 34972
Updated by: [EMAIL PROTECTED]
Reported By: VJTD3 at VJTD3 dot com
-Status: Open
+Status: Assigned
Bug Type: Streams related
Operating System: win32 only
PHP Version: 5.2CVS-2008-07-15
-Assigned To:
+Assigned To: pajoye
New Comment:
Assigned to the windows port maintainer.
Previous Comments:
------------------------------------------------------------------------
[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.
------------------------------------------------------------------------
[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;$i<11;$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 ($i=1;$i<11;$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) ? $data2 :
'empty')."\n";
sleep('1');
}
echo 'a person said to use select, this shows select won\'t work. (and
shouldn\'t it\'s not a socket.) It won\'t even allow input during select
calls.'."\n";
for ($i=1;$i<11;$i++) {
unset($read);
$read[] = STDIN;
socket_select($read, $write = null, $except = null, $tv = 0);
print_r($read);
sleep('1');
}
echo 'same code as yahoo and 0.0.0.0 with fread and blocked
reguardless of setting this to nonblocking.'."\n";
stream_set_blocking(STDIN, FALSE);
for ($i=1;$i<11;$i++) {
echo 'Watch me stall till you type enter I\'m blocking you!'."\n";
$data3 = fread(STDIN, 10);
$data3 = str_replace("\r\n", "\n", $data3);
$data3 = str_replace("\n\r", "\n", $data3);
$data3 = str_replace("\r", "\n", $data3);
$data3 = str_replace("\n", '', $data3);
echo 'pass: '.$i.' -> data: '.(strlen($data3) ? $data3 :
'empty')."\n";
sleep('1');
}
?>
anything I can do to help with details/make the bug easier to fix?
------------------------------------------------------------------------
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