if (isset($contents['mapping'])) {
foreach ($contents['mapping'] as $pattern => $replace) {
$contents['subject'] = preg_replace($pattern,$replace,$contents['subject']);
}
}
if (isset($contents['mapping'])) {
foreach ($contents['mapping'] as $pattern => $replace) {
$contents['subject'] = preg_replace($pattern,$replace,$contents['subject']);
}
}