Bug #71730 [Com]: compression fails

Edit report at https://bugs.php.net/bug.php?id=71730&edit=1 ID: 71730 Comment by: spam2 at rhsoft dot net Reported by: wowkise at gmai dot com Summary: compression fails Status: Verified Type: Bug Package: Output Control Operating System: ubuntu PHP Version: 7.2 Block user comment: N Private report: N New Comment: anyways, zlib.output_compression is a bad idea! other than apaches mod_defalte it don't take the client headers if it supports compression at all into account Previous Comments: ------------------------------------------------------------------------ [2018-07-07 15:51:13] wowkise at gmail dot com rhsoft, you are correct what i meant is that headers_sent() check should have returned true as there was content that was sent, therefore headers cant be send anymore. ------------------------------------------------------------------------ [2018-06-14 11:26:03] spam2 at rhsoft dot net "the headers get sent anyway regardless if there is content before" is technically wrong - they can't after the first body char and the problem is that compression happens even if sending the header fails - so the client get compressed content which was not announced ------------------------------------------------------------------------ [2018-06-14 11:19:07] mike@php.net Verified ------------------------------------------------------------------------ [2016-03-07 15:06:40] wowkise at gmai dot com Description: ------------ if you take a look at the test script, the output_compression shouldn't have been sent, as there is an output before it, however, on Ubuntu 15.10, Using php5-fpm nginx, the headers get sent anyway regardless if there is content before it or not, and that's breaks browsers, and shows errors such as Chrome: This webpage is not available - ERR_CONTENT_DECODING_FAILED Firefox: Content Encoding Error The page you are trying to view cannot be shown because it uses an invalid or unsupported form of compression. Test script: --------------- <?php $obj = (object) [ 'foo' => 'bar' ]; var_dump( $obj ); if ( !headers_sent() ) { ini_set( 'zlib.output_compression', 1 ); } Expected result: ---------------- the header shouldn't have been sent. Actual result: -------------- the header get sent which garbled the output, which in turn breaks the output_compression, and causes the browsers to show error. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=71730&edit=1