[PHP]Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING

[nicola75ss]

$MySql = "INSERT INTO Presenti (Nome, Stanza, StanzaApparente, OraEntrata, OraUscita, UltimoRefresh) VALUES ('$pgf', $stf, $stApparente, NOW(), '2037-12-31 00:00:00', NOW())";