private function getErrorMessage()
{
switch (json_last_error()) {
case JSON_ERROR_DEPTH:
return 'Maximum stack depth exceeded';
case JSON_ERROR_STATE_MISMATCH:
return 'Underflow or the modes mismatch';
case JSON_ERROR_CTRL_CHAR:
return 'Unexpected control character found';
case JSON_ERROR_SYNTAX:
return 'Syntax error, malformed JSON';
case JSON_ERROR_UTF8:
return 'Malformed UTF-8 characters, possibly incorrectly encoded';
default:
return 'Unknown error';
}
}