安装了Xdebug，但是我在phpinfo中找不到它

Question

I've installed Xdebug but cant find it in phpinfo() output.

I am operating according to https://xdebug.org/wizard.php :

Tailored Installation Instructions Summary

Xdebug installed: no
Server API: FPM/FastCGI
Windows: no
Zend Server: no
PHP Version: 7.2.14-1
Zend API nr: 320170718
PHP API nr: 20170718
Debug Build: no
Thread Safe Build: no
OPcache Loaded: no
Configuration File Path: /etc/php/7.2/fpm
Configuration File: /etc/php/7.2/fpm/php.ini
Extensions directory: /usr/lib/php/20170718

Instructions

Download xdebug-2.7.0.tgz
Install the pre-requisites for compiling PHP extensions.
On your Ubuntu system, install them with: apt-get install php-dev autoconf automake
Unpack the downloaded file with tar -xvzf xdebug-2.7.0.tgz
Run: cd xdebug-2.7.0

Run: phpize (See the FAQ if you don't have phpize).

As part of its output it should show:

Configuring for:
...
Zend Module Api No:      20170718
Zend Extension Api No:   320170718

If it does not, you are using the wrong phpize. Please follow this FAQ entry and skip the next step.
Run: ./configure
Run: make
Run: cp modules/xdebug.so /usr/lib/php/20170718
Edit /etc/php/7.2/fpm/php.ini and add the line
zend_extension = /usr/lib/php/20170718/xdebug.so
Restart the webserver

When I execute php -m|grep xdebug it returns:

Failed loading /usr/lib/php/20180731/xdebug.so: /usr/lib/php/2017/xdebug.so: undefined symbol: zend_post_startup_cb

I don't know what's the zend_post_startup_cb ; I can't find any information in website.

Answer 1

Try to install from this

sudo apt-get install php-xdebug

You may find the xdebug.ini here (for php version 7.2)

vi /etc/php/7.2/mods-available/xdebug.ini //zend_extension=xdebug.so

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You may get the details on this reference link http://www.dieuwe.com/blog/xdebug-ubuntu-1604-php7

Answer 2

Try running:

sudo pecl install xdebug

and follow its instructions. I have tried compiling xdebug in many ways and PECL was the only one it worked with