private function showHelp()
{
$helper = 'Usage:' . PHP_EOL;
$helper .= ' app/fake <fake data name> [-j] [-n <integer>] [-c <config file path>]' . PHP_EOL . PHP_EOL;
$helper .= 'Options:' . PHP_EOL;
$helper .= str_pad(' -j', 20) . 'Returns JSON format (default string)' . PHP_EOL;
$helper .= str_pad(' -n <num>', 20) . 'Returns <num> times the result' . PHP_EOL;
$helper .= str_pad(' -l', 20) . 'Changes the locale settings (default en-GB)' . PHP_EOL;
$helper .= str_pad(' -c <conf>', 20) . 'Uses the <conf> file for generating data (override the locale -l if set)' . PHP_EOL;
$helper .= str_pad(' -t <table>', 20) . 'Fills fake data in the specified <table> (requires a config file)' . PHP_EOL;
$helper .= str_pad(' -s <file|string>', 20) . 'Returns a fake data from specified <file> or <string> template source' . PHP_EOL;
$helper .= str_pad(' -h', 20) . 'Displays this help' . PHP_EOL;
return $helper;
}