/**
* Print an error page displaying an error message. New method - use this for new code.
*
* @param string $errorcode The name of the string from error.php to print
* @param string $module name of module
* @param string $link The url where the user will be prompted to continue. If no url is provided the user will be directed to the site index page.
* @param object $a Extra words and phrases that might be required in the error string
* @return terminates script, does not return!
*/
function print_error($errorcode, $module = 'error', $link = '', $a = NULL)
{
global $CFG, $UNITTEST;
// If unittest running, throw exception instead
if (!empty($UNITTEST->running)) {
// Errors in unit test become exceptions, so you can unit test
// code that might call error().
throw new moodle_exception($errorcode, $module, $link, $a);
}
if (empty($module) || $module == 'moodle' || $module == 'core') {
$module = 'error';
}
if (!isset($CFG->theme) or !isset($CFG->stylesheets)) {
// error found before setup.php finished
_print_early_error($errorcode, $module, $a);
} else {
_print_normal_error($errorcode, $module, $a, $link, debug_backtrace());
}
}
/**
* Default exception handler, uncought exceptions are equivalent to using print_error()
*/
function default_exception_handler($ex)
{
global $CFG;
$backtrace = $ex->getTrace();
$place = array('file' => $ex->getFile(), 'line' => $ex->getLine(), 'exception' => get_class($ex));
array_unshift($backtrace, $place);
$earlyerror = !isset($CFG->theme) || !isset($CFG->stylesheets);
foreach ($backtrace as $stackframe) {
if (isset($stackframe['function']) && $stackframe['function'] == 'print_header') {
$earlyerror = true;
break;
}
}
if ($ex instanceof moodle_exception) {
$errorcode = $ex->errorcode;
$module = $ex->module;
$a = $ex->a;
$link = $ex->link;
$debuginfo = $ex->debuginfo;
} else {
$errorcode = 'generalexceptionmessage';
$module = 'error';
$a = $ex->getMessage();
$link = '';
$debuginfo = null;
}
if ($earlyerror) {
_print_early_error($errorcode, $module, $a, $backtrace, $debuginfo);
} else {
_print_normal_error($errorcode, $module, $a, $link, $backtrace, $debuginfo);
}
}
