I have just compiled 7.0.0.beta1 and try to use Xdebug. There is a need of engine update (currently, Zend Engine 3.0.0-dev).

Here is the Apache 2.4 error log:

...
"Xdebug requires Zend Engine API version 220131226.
The Zend Engine API version 320140815 which is installed, is newer.
Contact Derick Rethans at http://xdebug.org/docs/faq#api for a later version of Xdebug."
...

Anyway, it's PHP 7 beta phase. Let's wait a little :)

I am working on it, but it's an awful lot of work. The current changes: https://github.com/derickr/xdebug/compare/master...derickr:php7

After I made it compile, I need to make it work. Expect this to take several months.

@derick, do you think XDebug will be ready when PHP 7.0 is officially released ?

That's the plan.

I saw it already compiles on Centos 6. And it looks like you are close to make it compile with VC14 for Windows as well:

Microsoft (R) Program Maintenance Utility Version 14.00.23026.0
Copyright (C) Microsoft Corporation. All rights reserved.

ext\xdebug\xdebug_code_coverage.c(518): error C2065: 'base_address': undeclared identifier
ext\xdebug\xdebug_monitor.c(62): error C2070: 'void (__cdecl )(void ,void *)': illegal sizeof operand
ext\xdebug\xdebug_monitor.c(62): error C2198: 'malloc': too few arguments for call
ext\xdebug\xdebug_stack.c(696): error C2065: 'ZEND_SERVICE_MB_STYLE': undeclared identifier

Good luvk with the development.

Under x64 the base_address error is not there. Only xdebug_monitor.c#L62 is problematic:

C:\php-sdk\php70dev>nmake -i php_xdebug.dll | grep error

Microsoft (R) Program Maintenance Utility Version 14.00.23026.0
Copyright (C) Microsoft Corporation. All rights reserved.

ext\xdebug\xdebug_monitor.c(62): error C2070: 'void (__cdecl )(void ,void *)': illegal sizeof operand
ext\xdebug\xdebug_monitor.c(62): error C2198: 'malloc': too few arguments for call
LINK : fatal error LNK1181: cannot open input file 'C:\php-sdk\php70dev\x64\Release\ext\xdebug\xdebug_monitor.obj'

I remove the '|ZEND_SERVICE_MB_STYLE' in xdebug_stack.c#L696

Wikd guess, should not xdebug_monitor.c#L62 be

xdebug_monitored_function_entry *tmp = xdmalloc(sizeof(xdebug_monitored_function_entry));

Fixed for 2.4.0RC1 -- even Windows :-)