下载xdebug源码

打开https://xdebug.org/wizard.php，将phpinfo()的内容复制到表单中，最终会分析出我们需要的xdebug版本，

最终得知，本机需要的是xdebug-2.6.1，下载并解压到docker中，并进入相应的目录

安装编译环境

从skiychan/nginx-php7的说明中，了解到编译环境的依赖，安装之：

yum install -y gcc \
    gcc-c++ \
    autoconf \
    automake \
    libtool \
    make \
    cmake

编译

[root@69e52c4fa4d1 xdebug-2.6.1]# locate phpize
/usr/local/php/bin/phpize
[root@69e52c4fa4d1 xdebug-2.6.1]# /usr/local/php/bin/phpize
...
...
[root@69e52c4fa4d1 xdebug-2.6.1]# locate php-config
/usr/local/php/bin/php-config
[root@69e52c4fa4d1 xdebug-2.6.1]# ./configure --enable-xdebug --with-php-config=/usr/local/php/bin/php-config
....
....
[root@69e52c4fa4d1 xdebug-2.6.1]# make
...
Libraries have been installed in:
   /data/www/xdebug-2.6.1/xdebug-2.6.1/modules

If you ever happen to want to link against installed libraries
in a given directory, LIBDIR, you must either use libtool, and
specify the full pathname of the library, or use the `-LLIBDIR'
flag during linking and do at least one of the following:
   - add LIBDIR to the `LD_LIBRARY_PATH' environment variable
     during execution
   - add LIBDIR to the `LD_RUN_PATH' environment variable
     during linking
   - use the `-Wl,--rpath -Wl,LIBDIR' linker flag
   - have your system administrator add LIBDIR to `/etc/ld.so.conf'

See any operating system documentation about shared libraries for
more information, such as the ld(1) and ld.so(8) manual pages.
...
...
[root@69e52c4fa4d1 xdebug-2.6.1]# updatedb
[root@69e52c4fa4d1 xdebug-2.6.1]# locate extensions
/usr/lib64/python2.7/idlelib/config-extensions.def
/usr/local/php/include/php/Zend/zend_extensions.h
/usr/local/php/lib/php/extensions
/usr/local/php/lib/php/extensions/no-debug-non-zts-20170718
/usr/local/php/lib/php/extensions/no-debug-non-zts-20170718/opcache.a
/usr/local/php/lib/php/extensions/no-debug-non-zts-20170718/opcache.so
...
...
[root@69e52c4fa4d1 xdebug-2.6.1]# cd /usr/local/php/lib/php/extensions/
[root@69e52c4fa4d1 extensions]# ls
no-debug-non-zts-20170718
[root@69e52c4fa4d1 extensions]# mkdir xdebug-2.6.1
[root@69e52c4fa4d1 extensions]# cp /data/www/xdebug-2.6.1/xdebug-2.6.1/modules/xdebug.so xdebug-2.6.1/
[root@69e52c4fa4d1 extensions]# cd xdebug-2.6.1/
[root@69e52c4fa4d1 xdebug-2.6.1]# ls
xdebug.so
...
...
[root@69e52c4fa4d1 etc]# /usr/local/php/bin/php -m
[PHP Modules]
bcmath
Core
...
...
[root@2ff4ac91b928 /]# locate php.ini
/usr/local/php/etc/php.ini
....
....
插入
zend_extension = /usr/local/php/lib/php/extensions/xdebug-2.6.1/xdebug.so
...
...
[root@69e52c4fa4d1 etc]# /usr/local/php/bin/php -m
[PHP Modules]
bcmath
Core
...
[Zend Modules]
Xdebug
[root@69e52c4fa4d1 etc]# ps aux
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root         1  0.0  0.1  11688  2472 ?        Ss   18:17   0:00 /bin/sh /start.sh
root        11  0.0  0.7 114044 15744 ?        S    18:17   0:00 /usr/bin/python /usr/bin/supervisord -n -c /etc/supervisord.conf
root        14  0.0  0.8 113808 17048 ?        S    18:17   0:00 php-fpm: master process (/usr/local/php/etc/php-fpm.conf)
root        15  0.0  0.2  45940  5804 ?        S    18:17   0:00 nginx: master process /usr/local/nginx/sbin/nginx
www         16  0.0  1.2  67552 25080 ?        S    18:17   0:00 nginx: worker process
www         17  0.0  1.2  67552 25104 ?        S    18:17   0:00 nginx: worker process
www         18  0.0  1.2  67552 25104 ?        S    18:17   0:00 nginx: worker process
www         19  0.0  1.2  67552 25080 ?        S    18:17   0:00 nginx: worker process
www         20  0.0  1.2  67552 24672 ?        S    18:17   0:00 nginx: worker process
www         21  0.0  1.2  67552 24672 ?        S    18:17   0:00 nginx: worker process
www         22  0.0  0.7 113872 14812 ?        S    18:17   0:00 php-fpm: pool www
www         23  0.0  0.7 113872 14864 ?        S    18:17   0:00 php-fpm: pool www
root        24  0.0  0.1  11828  2980 pts/0    Ss   18:19   0:00 bash
root      6366  0.0  0.1  51716  3476 pts/0    R+   19:01   0:00 ps aux
[root@69e52c4fa4d1 etc]# kill -USR2 14
这时phpinfo()中也有xdebug的信息了