Unable to install xdebug - undefined symbol: zend_post_startup_cb
I uninstalled php7 with apt-get purge php and installed it again with zypper in php7 php7-mysql.
Then I followed the install instructions of xdebug and restarted apache with systemctl restart apache2, but there is no xdebug in my phpinfo(), only some occurences in HTTP_HEADER e.g. (XDEBUG_SESSION=netbeans-xdebug;)
This is my configuration in php.ini:
[xdebug]
zend_extension = /usr/lib64/php7/extensions/xdebug.so
xdebug.remote_autostart=on
xdebug.remote_enable=on
xdebug.remote_handler="dbgp"
xdebug.remote_host="192.168.40.161"
xdebug.remote_port=9000
xdebug.remote_mode=req
xdebug.idekey="netbeans-xdebug"
xdebug.renite_enable = 1
xdebug.max_nesting_level = 1000
xdebug.profiler_enable_trigger = 1
xdebug.profiler_output_dir = '/var/log/xdebug'
The file /usr/lib64/php7/extensions/xdebug.so does exist, I just installed xdebug from source and copied xdebug.so from modules/xdebug.so to /usr/lib64/php7/extensions/
I even restarted the whole server.
How can I fix this?
Update:
I checked the apache2 error log /var/log/apache2/error_log and noticed that this is getting logged just right after restarting the apache2 service:
[Tue Jul 30 14:25:08.674685 2019] [mpm_prefork:notice] [pid 4862] AH00170: caught SIGWINCH, shutting down gracefully
AH00558: httpd-prefork: Could not reliably determine the server's fully qualified domain name, using 192.168.40.44. Set the 'ServerName' directive globally to suppress this message
[Tue Jul 30 14:25:08.758551 2019] [ssl:warn] [pid 5060] AH01873: Init: Session Cache is not configured [hint: SSLSessionCache]
Failed loading /usr/lib64/php7/extensions/xdebug.so: /usr/lib64/php7/extensions/xdebug.so: undefined symbol: zend_post_startup_cb
[Tue Jul 30 14:25:08.765786 2019] [mpm_prefork:notice] [pid 5060] AH00163: Apache/2.4.33 (Linux/SUSE) OpenSSL/1.1.0i-fips PHP/7.2.5 configured -- resuming normal operations
[Tue Jul 30 14:25:08.765815 2019] [core:notice] [pid 5060] AH00094: Command line: '/usr/sbin/httpd-prefork -D SYSCONFIG -C PidFile /var/run/httpd.pid -C Include /etc/apache2/sysconfig.d//loadmodule.conf -C Include /etc/apache2/sysconfig.d//global.conf -f /etc/apache2/httpd.conf -c Include /etc/apache2/sysconfig.d//include.conf -D SYSTEMD -D FOREGROUND'
=> Failed loading /usr/lib64/php7/extensions/xdebug.so: /usr/lib64/php7/extensions/xdebug.so: undefined symbol: zend_post_startup_cb
In my case, since I use php7.2 and there is another PHP version installed on my Ubuntu, so, I have to install the xdebug with the correct version.
I follow the step given from the official site: https://xdebug.org/wizard.
But I have to change some syntax to use the correct PHP version like phpize needs to be changed to phpize-7.2 and use the specific php-config version to do the ./configure step like this:
./configure --with-php-config=/usr/bin/php-config7.2
Reference: http://ubuntuhowtoo.blogspot.com/2020/06/php-xdebug-multi-php-versions-in-server.html
I was able to install it by executing sudo apt-get install php-xdebug. I wonder why it does not work if I try to install it manually by going the official way and installing it via source...??
However, I get "Waiting for Connection" in NetBeans and nothing happens, but this is another problem...