1 install.core.inc | install_backdrop($settings = array()) |
Installs Backdrop either interactively or via an array of passed-in settings.
The Backdrop installation happens in a series of steps, which may be spread out over multiple page requests. Each request begins by trying to determine the last completed installation step (also known as a "task"), if one is available from a previous request. Control is then passed to the task handler, which processes the remaining tasks that need to be run until (a) an error is thrown, (b) a new page needs to be displayed, or (c) the installation finishes (whichever happens first).
Parameters
$settings: An optional array of installation settings. Leave this empty for a normal, interactive, browser-based installation intended to occur over multiple page requests. Alternatively, if an array of settings is passed in, the installer will attempt to use it to perform the installation in a single page request (optimized for the command line) and not send any output intended for the web browser. See install_state_defaults() for a list of elements that are allowed to appear in this array.
Throws
Exception
See also
File
- core/
includes/ install.core.inc, line 78 - API functions for installing Backdrop.
Code
function install_backdrop($settings = array()) {
global $install_state;
// Initialize the installation state with the settings that were passed in,
// as well as a boolean indicating whether or not this is an interactive
// installation.
$interactive = empty($settings);
$install_state = $settings + array('interactive' => $interactive) + install_state_defaults();
try {
// Begin the page request. This adds information about the current state of
// the Backdrop installation to the passed-in array.
install_begin_request($install_state);
// Based on the installation state, run the remaining tasks for this page
// request, and collect any output.
$output = install_run_tasks($install_state);
}
catch (Exception $e) {
// When an installation error occurs, either send the error to the web
// browser or pass on the exception so the calling script can use it.
if ($install_state['interactive']) {
install_display_output($e->getMessage(), $install_state);
}
else {
throw $e;
}
}
// All available tasks for this page request are now complete. Interactive
// installations can send output to the browser or redirect the user to the
// next page.
if ($install_state['interactive']) {
if ($install_state['parameters_changed']) {
// Redirect to the correct page if the URL parameters have changed.
install_goto(install_redirect_url($install_state));
}
elseif (isset($output)) {
// Display a page only if some output is available. Otherwise it is
// possible that we are printing a JSON page and theme output should
// not be shown.
install_display_output($output, $install_state);
}
}
}