bitbucket_post_recieve.php

<?php

// Use in the "Post-Receive URLs" section of your Bitbucket repo.

if ( $_POST['payload'] ) {

  $data = json_decode($_POST['payload']);
  
  $commits = $data->{"commits"};
  
  // This code checks to see if commits were made to a specific branch, and if so, performs a git reset/pull
  foreach ($commits as $commit_obj) {
    $branch = $commit_obj->{"branch"};
    if ($branch == 'my-branch') {
      $output = shell_exec('cd /path/to/my/httpdocs && git reset --hard HEAD && git pull');
      echo "Output: <pre>$output</pre>";
      // TODO: Check for error statuses, respond appropriately
    }
  }
  
}
?>

This script will check for updates to a given branch, and if so, perform a Git reset and pull. This is good for use if, for example, you are working on a development branch for a website and need your dev server to automatically pull every time a commit is made.