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I have some code to reproduce this every time with php 7.3.1.
I suspected that one of our PHP extensions was causing the problem so I disabled all extensions except opcache.so and xdebug.so. If I remove either opcache or xdebug the problem goes away.
This appears to be similar to a bug that was reported as fixed in 2.7.0rc1 (0001583) but this is happening in 7.3.1.
<?php
const DB_PERSIST=false;
class Database {
public function __destruct() {
$this->close();
}
public function close($arg=DB_PERSIST) {}
}
function noop() {}
$db = new Database();
$db->close();
noop(); |
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PHP 7.3.1 (cli) (built: Jan 8 2019 13:55:51) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.3.1, Copyright (c) 1998-2018 Zend Technologies
with Zend OPcache v7.3.1, Copyright (c) 1999-2018, by Zend Technologies
with Xdebug v2.7.0RC2, Copyright (c) 2002-2019, by Derick Rethans |
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I can't reproduce this:
derick@gargleblaster:~/dev/php/xdebug-xdebug$ cat tests/bug01643.inc
<?php
const DB_PERSIST=false;
class Database {
public function __destruct() {
$this->close();
}
public function close($arg=DB_PERSIST) {}
}
function noop() {}
$db = new Database();
$db->close();
noop();
derick@gargleblaster:~/dev/php/xdebug-xdebug$ php -v
PHP 7.3.1 (cli) (built: Feb 1 2019 12:25:05) ( NTS DEBUG )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.3.1, Copyright (c) 1998-2018 Zend Technologies
with Zend OPcache v7.3.1, Copyright (c) 1999-2018, by Zend Technologies
with Xdebug v2.7.0RC2, Copyright (c) 2002-2019, by Derick Rethans
derick@gargleblaster:~/dev/php/xdebug-xdebug$ php -dxdebug.auto_trace=1 -dxdebug.collect_params=4 tests/bug01643.inc
derick@gargleblaster:~/dev/php/xdebug-xdebug$
Can you show the output of <code>php --ri Xdebug</code> ? |
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My php-fpm config is stock except that I have disabled all of the extensions other than opcache and xdebug. If opcache is not configured it does not happen. If xdebug is not configured it does not happen
This is reproducible every time:
curl "http://YOURBOXIP/crash3.php"
or locallycurl "http://localhost/crash3.php"
pen.
.
<html>
<head><title>502 Bad Gateway</title></head>
<body bgcolor="white">
<center><h1>502 Bad Gateway</h1></center>
<hr><center>nginx/1.12.2</center>
</body>
</html> |
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php --ri Xdebug
xdebug
xdebug support => enabled
Version => 2.7.0RC2
IDE Key => PHPSTORM
Supported protocols
DBGp - Common DeBuGger Protocol
Directive => Local Value => Master Value
xdebug.auto_trace => Off => Off
xdebug.trace_enable_trigger => Off => Off
xdebug.trace_enable_trigger_value => no value => no value
xdebug.trace_output_dir => /tmp => /tmp
xdebug.trace_output_name => trace.%c => trace.%c
xdebug.trace_format => 0 => 0
xdebug.trace_options => 0 => 0
xdebug.coverage_enable => On => On
xdebug.collect_includes => On => On
xdebug.collect_params => 0 => 0
xdebug.collect_return => Off => Off
xdebug.collect_vars => Off => Off
xdebug.collect_assignments => Off => Off
xdebug.default_enable => On => On
xdebug.extended_info => On => On
xdebug.file_link_format => no value => no value
xdebug.filename_format => no value => no value
xdebug.force_display_errors => Off => Off
xdebug.force_error_reporting => 0 => 0
xdebug.halt_level => 0 => 0
xdebug.max_nesting_level => 256 => 256
xdebug.max_stack_frames => -1 => -1
xdebug.overload_var_dump => 2 => 2
xdebug.show_error_trace => Off => Off
xdebug.show_exception_trace => Off => Off
xdebug.show_local_vars => Off => Off
xdebug.show_mem_delta => Off => Off
xdebug.dump.COOKIE => no value => no value
xdebug.dump.ENV => no value => no value
xdebug.dump.FILES => no value => no value
xdebug.dump.GET => no value => no value
xdebug.dump.POST => no value => no value
xdebug.dump.REQUEST => no value => no value
xdebug.dump.SERVER => no value => no value
xdebug.dump.SESSION => no value => no value
xdebug.dump_globals => On => On
xdebug.dump_once => On => On
xdebug.dump_undefined => Off => Off
xdebug.profiler_enable => Off => Off
xdebug.profiler_output_dir => /tmp => /tmp
xdebug.profiler_output_name => cachegrind.out.%p => cachegrind.out.%p
xdebug.profiler_enable_trigger => Off => Off
xdebug.profiler_enable_trigger_value => no value => no value
xdebug.profiler_append => Off => Off
xdebug.profiler_aggregate => Off => Off
xdebug.remote_enable => On => On
xdebug.remote_handler => dbgp => dbgp
xdebug.remote_host => localhost => localhost
xdebug.remote_mode => req => req
xdebug.remote_port => 9123 => 9123
xdebug.remote_autostart => Off => Off
xdebug.remote_connect_back => On => On
xdebug.remote_log => no value => no value
xdebug.idekey => PHPSTORM => PHPSTORM
xdebug.remote_cookie_expire_time => 3600 => 3600
xdebug.remote_addr_header => no value => no value
xdebug.remote_timeout => 200 => 200
xdebug.var_display_max_children => 128 => 128
xdebug.var_display_max_data => 512 => 512
xdebug.var_display_max_depth => 3 => 3
xdebug.cli_color => 0 => 0
xdebug.scream => Off => Off
xdebug.gc_stats_enable => Off => Off
xdebug.gc_stats_output_dir => /tmp => /tmp
xdebug.gc_stats_output_name => gcstats.%p => gcstats.%p |
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opcache.optimization_level=0xFFFFFBFF
makes the problem go away
compact literals optimisation needs to be disabled |
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That's odd, as Xdebug should turn that off for you. Can you at the top of your script (right after the <?php) put:
<code>
var_dump(ini_get("opcache.optimization_level"));
</code>
?
Alternatively, upgrade to PHP 7.3.2 which should have this bug in OPcache fixed fixed. |
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We are using 7.3.2 now
PHP 7.3.2 (cli) (built: Feb 5 2019 13:10:03) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.3.2, Copyright (c) 1998-2018 Zend Technologies
with Zend OPcache v7.3.2, Copyright (c) 1999-2018, by Zend Technologies
with Xdebug v2.7.0beta1, Copyright (c) 2002-2018, by Derick Rethans |
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Going back to my box that has php 7.3.1, and checking the opcache settings:
<pre class='xdebug-var-dump' dir='ltr'>
<small>/var/www/html/crash3.php:2:</small><small>string</small> <font color='#cc0000'>'0xFFFFFFFF'</font> (length=10)
Looks like the ini settings are not changed.
ls /etc/opt/remi/php73/php.d/
10-opcache.ini 15-xdebug.ini 20-mysqlnd.ini opcache-default.blacklist
Maybe the order has something to do with it.
Let me know if you need anything else; if not I am going to recycle the 7.3.1 VM. |
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Hi - if it all works in PHP 7.3.2, I think we can just consider this closed? |
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This seems fixed since PHP 7.3.2 and an earlier version of Xdebug. I'm closing this because I believe this is addressed, and the requested feedback wasn't provided. |
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