Edit report at https://bugs.php.net/bug.php?id=80953&edit=1
ID: 80953
Updated by: cmb@php.net
Reported by: tessus@php.net
Summary: gzencode(): stream error
-Status: Open
+Status: Feedback
Type: Bug
Package: Zlib related
Operating System: Linux
PHP Version: 7.4.16
-Assigned To:
+Assigned To: cmb
Block user comment: N
Private report: N
New Comment:
> PHP Warning: gzencode(): stream error in t.php on line 3
This is apparently caused by deflateInit2()[1] returning
Z_STREAM_ERROR. The zlib manual[2] states:
| deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was
| not enough memory, Z_STREAM_ERROR if a parameter is invalid (such
| as an invalid method), or Z_VERSION_ERROR if the zlib library
| version (zlib_version) is incompatible with the version assumed by
| the caller (ZLIB_VERSION).
Does zlib_version() match ZLIB_VERSION for you?
[1] <https://github.com/php/php-src/blob/php-7.4.16/ext/zlib/zlib.c#L346>
[2] <https://zlib.net/manual.html>
Previous Comments:
------------------------------------------------------------------------
[2021-04-12 17:49:32] tessus@php.net
Description:
------------
I've tested it with PHP 7.4.15 and PHP 7.4.16.
I get errors with zlib related functions. e.g. for the test script below, I get the following
warning, which should be an error in the first place, because the resulting file is invalid.
PHP Warning: gzencode(): stream error in t.php on line 3
It happens with cli and php-fpm. I do have read/write access to the directory where the file
bigfile.txt is located.
I've tested this with 7.3.27 and it works without issues. I compile PHP myself and there were
no errors in config.log, nor during compilation. configure stated for both PHP releases that zlib
was found and ok to use.
Test script:
---------------
<?php
$data = implode("", file("bigfile.txt"));
$gzdata = gzencode($data, 9);
$fp = fopen("bigfile.txt.gz", "w");
fwrite($fp, $gzdata);
fclose($fp);
?>
Expected result:
----------------
The file should be compressed and the result should be a valid bigfile.txt.gz
Actual result:
--------------
A file bigfile.txt.gz is created with 0 bytes.
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=80953&edit=1