Sammy Powers has a new post to his site today showing you how to find and patch a bug in php-src, the source of the PHP language itself.

While he does provide all of the details in the post he also has created a screencast that walks you through the whole process as well. He breaks up the process into the different steps of the process:

• Find the bug (his was with the JSON handling)
• Submit a bug report (on bugs.php.net)
• Make a patch
• Run GDB
• Make a test
• Submit a PR and update the bug

He includes code and descriptions along the way and finishes out with further suggestions about feedback on the PR and how his own situation finished out.