PHP Mediawiki Eclipse debugging

Trying to get https://www.semantic-mediawiki.org/wiki/User:WolfgangFahl/Workdocumentation_2015-12-27 working again

Environment

• LAMP Intranet MediaWiki 1.33 with no security needs in a VMWare environment

lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 18.04.4 LTS
Release:	18.04
Codename:	bionic
apachectl -V
Server version: Apache/2.4.29 (Ubuntu)
Server built:   2019-09-16T12:58:48
mysql --version
mysql  Ver 14.14 Distrib 5.7.29, for Linux (x86_64) using  EditLine wrapper
php --version
PHP 7.2.24-0ubuntu0.18.04.2 (cli) (built: Jan 13 2020 18:39:59) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies
    with Zend OPcache v7.2.24-0ubuntu0.18.04.2, Copyright (c) 1999-2018, by Zend Technologies

Install eclipse php

cd /usr/local/src
# download eclipse-php-2019-12-R-linux-gtk-x86_64.tar.gz  from
# https://www.eclipse.org/downloads/
sudo tar xvfz eclipse-php-2019-12-R-linux-gtk-x86_64.tar.gz

Desktop icon

~/Desktop$ cat eclipse.desktop 
[Desktop Entry]
Type=Application
Terminal=false
Name=Eclipse
Exec=/usr/local/src/eclipse/eclipse
Comment=Eclipse 2019 Integrated development environment
Icon=/usr/local/src/eclipse/icon.xpm
StartupWMClass=Eclipse

Install Mediawiki

see https://www.mediawiki.org/wiki/Manual:Running_MediaWiki_on_Debian_or_Ubuntu

sudo apt-get install apache2 mysql-server php php-mysql libapache2-mod-php php-xml php-mbstring
/usr/local/src$ sudo wget https://releases.wikimedia.org/mediawiki/1.33/mediawiki-1.33.2.tar.gz
wf@fur:/var/www/html$ sudo tar xvfz /usr/local/src/mediawiki-1.33.2.tar.gz
sudo ln -s mediawiki-1.33.2 wiki

Configure Localsettings.php

set mysql root password

• https://www.digitalocean.com/community/tutorials/so-installieren-sie-mysql-auf-ubuntu-18-04-de

follow steps

and download LocalSettings.php

make phpinfo.php available

<?php
  phpinfo();

Install Xdebug

sudo apt-get install php-xdebug php-dev
sudo apt install php-pear
sudo pecl channel-update pecl.php.net
sudo pecl install xdebug

Create first project

New Project "loop" add loop.php in include_path/loop folder

<?php
for ($i = 1; $i <= 10; $i++) {
    echo $i;
}

1. Try Run / Debug as PHP CLI Application
2. You'll be asked to add PHP env
3. Click "add" to add a New PHP Executable
4. use /usr/bin/php as Executable path
5. use system default php.ini
6. Click "finish"
7. Click "Apply and Close"
8. Try Run/Debug as PHP CLI Application again
9. Set breakpoints and debug

Create MediaWiki Project

make sure your user is part of group www-data

/var/www/html$ sudo chown www-data.www-data mediawiki-1.33.2
/var/www/html$ sudo chmod g+w mediawiki-1.33.2/
/var/www/html$ sudo chown -R www-data.www-data wiki

Create Eclipse project with "open project from existing source" using /var/www/html/wiki as the source folder

Enable composer in Project's properties

Add Extension to debug

e.g. S5SlideShow

{
	"require": {
		"wikimedia/at-ease": "*"
	}
}

wget https://getcomposer.org/composer.phar
sudo php composer.phar update

Debug Extension

• https://www.eclipse.org/pdt/help/html/debugging_a_php_web_page.htm

Download and unpack Zend Debugger

drwxrwxr-x 3 wf   wf        4096 Feb 23  2017 ZendDebugger-linux-x86_64
-rw-rw-r-- 1 wf   wf     1169184 Feb  8 17:01 ZendDebugger-linux-x86_64.tar.gz

1. copy dummy.php to webroot