Earlier quoted context omitted.
I'll take a long function name over an incomprehensible one any day.
Expanding abbreviations doesn't improve clarity. E.g. XMLHttpRequest vs ExtensibleMarkupLanguageHypertextTransferProtocolRequest and ftp_ssl_connect vs FileTransferProtocol_SecureSocketLayer_Connect or if you want to get really ridiculous: MysqlndUhConnection::sslSet becomes MyStructuredQueryLanguageNativeDriverUserHandlerConnection::SecureSocketLayerSet
Not being very familiar with PHP, I don't have any pet examples of inconsistent names to offer corrections for that might correspond with what he's actually talking about.