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Bug #16048 fgets/feof failure when stdin is reading from a pipe
Submitted: 2002-03-13 17:00 UTC Modified: 2002-08-02 01:00 UTC
Votes:5
Avg. Score:4.4 ± 0.8
Reproduced:4 of 5 (80.0%)
Same Version:4 (100.0%)
Same OS:3 (75.0%)
From: pjm at cctechnol dot com Assigned:
Status: No Feedback Package: Filesystem function related
PHP Version: 4.1.2 OS: Solaris 2.7 & 2.8
Private report: No CVE-ID: None
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 [2002-03-13 17:00 UTC] pjm at cctechnol dot com
The fgets() function works differently when the input is a pipe.  Specifically, feof() returns true after the first line is read.  The test script and sample output follow.  The test script works fine if stdin is redirected from a file.  It fails if stdin is a pipe.

Nothing special about the build:

./configure  --prefix=/usr/local --with-mysql

pjm@poseidon> cat test.php 
#!/usr/local/bin/php -q
<?php

$fd = fopen("php://stdin", "r");
while (! feof($fd))
{
        $buffer = fgets($fd, 4096);
        echo $buffer;
}

?>
pjm@poseidon> < test.php ./test.php 
#!/usr/local/bin/php -q
<?php

$fd = fopen("php://stdin", "r");
while (! feof($fd))
{
        $buffer = fgets($fd, 4096);
        echo $buffer;
}

?>
pjm@poseidon> cat test.php | ./test.php 
#!/usr/local/bin/php -q


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 [2002-03-13 17:29 UTC] pjm at cctechnol dot com
I also tested this on Red Hat 7.2 with PHP 4.0.6  It works fine there.
 [2002-07-01 15:10 UTC] sander@php.net
Can't reproduce with the latest CVS. Can you try a snapshot from http://snaps.php.net to see if it's been fixed?
 [2002-07-01 15:13 UTC] sander@php.net
This is actually a dupe of #8849. Please try the snapshot anyway but add your experiences to #8849. Thanks.
 [2002-07-01 15:15 UTC] sander@php.net
Sorry, I'm crazy tonight... #18022 is a dupe of this one...

Just noting this url from #18022:
http://marc.theaimsgroup.com/?l=php-general&m=101428004729977&w=2
 [2002-08-02 01:00 UTC] php-bugs at lists dot php dot net
No feedback was provided for this bug for over a month, 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".
 
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