相关环境：
ubuntu16.04
php7.0
Xdebug2.4
openjdk version “1.8.0_91”
openjdk的安装及配置
#安装openjdk:
edemon@linux:~\$ sudo apt install default-jre
edemon@linux:~$ whereis jvm
jvm: /usr/lib/jvm
edemon@linux:~$ cd /usr/lib/jvm
edemon@linux:/usr/lib/jvm$ ls
default-java java-1.8.0-openjdk-amd64 java-8-openjdk-amd64
edemon@linux:/usr/lib/jvm/java-1.8.0-openjdk-amd64$ ls
ASSEMBLY_EXCEPTION docs jre man THIRD_PARTY_README
bin include lib src.zip
#修改配置文件：
edemon@linux:/usr/lib/jvm/java-1.8.0-openjdk-amd64$ sudo gedit ~/.bashrc
＃加入内容：
export JAVA_HOME=/usr/lib/jvm/usr/lib/jvm/java-1.8.0-openjdk-amd64
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH
edemon@linux:/usr/lib/jvm/java-1.8.0-openjdk-amd64$ source ~/.bashrc
edemon@linux:/usr/lib/jvm/java-1.8.0-openjdk-amd64$ java -version
＃出现下面内容则正确：
openjdk version "1.8.0_91"
OpenJDK Runtime Environment (build 1.8.0_91-8u91-b14-0ubuntu4~16.04.1-b14)
OpenJDK 64-Bit Server VM (build 25.91-b14, mixed mode)
#测试：
edemon@linux:~/Documents/java_space$ cat t.java
import java.util.*;
public class t {
public static void main(String[] args) {
System.out.println("hello");
}
}
edemon@linux:~/Documents/java_space$ javac t.java
edemon@linux:~/Documents/java_space$ ls
hello.java t.class t.java
edemon@linux:~/Documents/java_space$ java t
hello
Eclipse 上装插件
＃安装eclipse:
edemon@linux:~\$ sudo apt install eclipse
PHPEclipse相关URL :
PHPEclipse - http://download.eclipse.org/tools/pdt/updates/3.7
help—-install new software
workwith右边——add。输入name和URL.
安装成功后，重启即可。
pdt的快速上手：
http://www.eclipse.org/pdt/help/html/quick_start.htm但是在建立php工程出现：
The selected wizard could not be started.
Plug-in org.eclipse.php.ui was unable to load class org.eclipse.php.internal.ui.wizards.PHPProjectCreationWizard. An error occurred while automatically activating bundle org.eclipse.php.ui (272).
简单，只要我们新建一个文件夹，在使用这个文件夹作为php工作空间即可
或者：
edemon@linux:/usr/share/applications$ eclipse -clean
OpenJDK 64-Bit Server VM warning: ignoring option MaxPermSize=256m; support was removed in 8.0
新选一个工作空间即可。
但不能正常的新建php文件，应该是少了某些步骤
相关URL:
http://www.2cto.com/kf/201406/307800.html
http://www.linuxidc.com/Linux/2011-09/43031.htm
安装xdebug
（最开始安装xdebug2.1出现编译错误，换用一个高版本的2.4: )
tar -zxvf xdebug-2.4.0.tgz -C Xbug2.4 #解压到Xbug2.4
cd Xbud2.4
cd ./Xbug2.4
cd xdebug-2.4.0
sudo apt-get install php7.0-dev
phpize
make ./configure
sudo ./configure
sudo make
make test
sudo make install
sudo cp ~/Downloads/Xbug2.4/xdebug-2.4.0/modules/xdebug.so /usr/lib/php/7.0/
sudo gedit /etc/php/7.0/apache2/php.ini #配置php.ini
加入：
zend_extension = /usr/lib/php/7.0/xdebug.so
sudo /etc/init.d/apache2 restart
打开phpinfo有出现:
相关反馈效果：
edemon@linux:~/Downloads/Xbug2.4/xdebug-2.4.0$ make test
Build complete.
Don't forget to run 'make test'.
=====================================================================
PHP : /usr/bin/php7.0
PHP_SAPI : cli
PHP_VERSION : 7.0.4-7ubuntu2.1
ZEND_VERSION: 3.0.0
PHP_OS : Linux - Linux linux 4.4.0-22-generic #40-Ubuntu SMP Thu May 12 22:03:46 UTC 2016 x86_64
INI actual : /home/edemon/Downloads/Xbug2.4/xdebug-2.4.0/tmp-php.ini
More .INIs :
CWD : /home/edemon/Downloads/Xbug2.4/xdebug-2.4.0
Extra dirs :
VALGRIND : Not used
=====================================================================
TIME START 2016-06-08 11:24:21
=====================================================================
No tests were run.
edemon@linux:~/Downloads/Xbug2.4/xdebug-2.4.0$ sudo make install
Installing shared extensions: /usr/lib/php/20151012/
+----------------------------------------------------------------------+
| |
| INSTALLATION INSTRUCTIONS |
| ========================= |
| |
| See http://xdebug.org/install.php#configure-php for instructions |
| on how to enable Xdebug for PHP. |
| |
| Documentation is available online as well: |
| - A list of all settings: http://xdebug.org/docs-settings.php |
| - A list of all functions: http://xdebug.org/docs-functions.php |
| - Profiling instructions: http://xdebug.org/docs-profiling2.php |
| - Remote debugging: http://xdebug.org/docs-debugger.php |
| |
| |
| NOTE: Please disregard the message |
| You should add "extension=xdebug.so" to php.ini |
| that is emitted by the PECL installer. This does not work for |
| Xdebug. |
| |
+----------------------------------------------------------------------+
edemon@linux:~/Downloads/Xbug2.4/xdebug-2.4.0$ sudo /etc/init.d/apache2 restart
[ ok ] Restarting apache2 (via systemctl): apache2.service.
但是后来使用eclipse新建php工程文件时出现过java.lang.NullPointerException，以及Could not open the editor: The editor class could not be instantiated. 这些问题实在不知怎么解决。。谁能解决它们请留言，谢谢。
