function _drupal_bootstrap_page_header in Drupal 7
Invokes hook_boot(), initializes locking system, and sends HTTP headers.
1 call to _drupal_bootstrap_page_header()
- drupal_bootstrap in includes/bootstrap.inc 
- Ensures Drupal is bootstrapped to the specified phase.
File
- includes/bootstrap.inc, line 2811 
- Functions that need to be loaded on every Drupal request.
Code
function _drupal_bootstrap_page_header() {
  bootstrap_invoke_all('boot');
  if (!drupal_is_cli()) {
    ob_start();
    drupal_page_header();
  }
}