The Xdebug PHP extension is required to allow PHP Tools to integrate debugging features into Visual Studio.
Choose the Right Xdebug Binaries
Choose the version depending on your PHP version, but always 32bit. It is strongly recommended to use the non-thread safe (NTS) version on Windows.
You can also use the tool provided by Xdebug developers: Xdebug Wizard You can copy and paste it in your phpinfo output. It will give you the correct version to download.
Copy Xdebug binary to your PHP Extensions Folder
PHP extensions folder is usually located within your PHP runtime, in
Copy downloaded Xdebug binaries into the PHP extensions folder.
Update PHP Configuration
Edit PHP Configuration file. Its name is usually
php.ini, and it is located within your PHP runtime folder.
Add the following lines at the end of your configuration file. Change the absolute path for xdebug so it corresponds to the correct path on your system.
[XDEBUG] zend_extension = "C:\Program Files (x86)\php-5.4.8\ext\php_xdebug-2.2.1-5.4-vc9-nts.dll" xdebug.remote_enable = on xdebug.remote_handler = dbgp xdebug.remote_host = 127.0.0.1 xdebug.remote_port = 9000 xdebug.remote_mode = req xdebug.idekey="php-vs"
- From PHP 5.3 onwards, you need to use
- Xdebug is incompatible with the Zend Optimizer and Zend Studio Debugger extensions. These extensions should be commented out.
- PHP Tools for Visual Studio has a configuration check feature that can recommend and apply configuration changes depending on your system.
xdebug.remote_port setting has to be the same as in PHP Tools options (in Visual Studio,
Tools | Options | PHP Tools | Advanced). The default value is
9000 and it is usually enough just to leave it as it is.
Note: nginx server using FastCGI may block port
9000by default. Change Xdebug port to
php.iniand in Visual Studio settings. Note that restarting nginx will not reload
php.ini! You will need to restart PHP, or your server.
To verify your Xdebug installation, follow these steps:
Create a simple PHP file containing the following:
<?php phpinfo(); ?>
- Open the corresponding URL in your browser.
- You should see the Xdebug section in the output.
If you do not see the section above in your phpinfo output, there may be something wrong with your PHP configuration or you may need to restart your web server to let PHP update its configuration. If PHP Tools debugging session was started before a configuration change, it is recommended to close it by exiting its systray icon or restarting Visual Studio.