How to Identify and Fix Server Performance Issues Caused by XDebug?

Debugging Your Server Performance with XDebug Disabling

If you suspect your server is experiencing performance bottlenecks after installing XDebug, disabling it temporarily can help you confirm your hypothesis. Here's a comprehensive guide to disabling XDebug:

1. Locate php.ini: Identify and open your PHP configuration file, typically named php.ini.

2. Modify XDebug Settings: Navigate within the php.ini file and locate the section related to XDebug. Modify the following settings to disable XDebug:

   • xdebug.remote_autostart=0: Set this to false to disable XDebug's automatic remote debugging.
   • xdebug.remote_enable=0: Set this to false to disable remote debugging explicitly.

3. Disable Profiler: Additionally, disable the profiler by setting:

   • xdebug.profiler_enable=0

4. Comment Out the Extension: While disabling XDebug's functions, it may still be loaded. To disable loading completely, locate the following line in php.ini:

   • zend_extension = "/path/to/php_xdebug.dll"

   Add a semi-colon (;) at the beginning of the line to comment it out:

   • ;zend_extension = "/path/to/php_xdebug.dll"
5. Restart Server: Finally, restart your PHP server for the changes to take effect.

Note:

• The instructions provided are specific to XDebug version 2. For XDebug version 3, refer to updated documentation or consult online resources.
• Disabling XDebug may result in performance loss, even when it is not actively engaged.
• For additional assistance, consider referencing the article "XDebug, how to disable remote debugging for a single .php file?"

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