The variable you supplied ($songs->PLAYEDAT
) is probably a string or at best a DateTime object.
If it’s a DateTime object:
$songs->PLAYEDAT->format('Y-m-d H:i:s')
If it’s a string representation of a date:
date('Y-m-d H:i:s', strtotime($songs->PLAYEDAT))
UPDATE: Answer specific to this question copied back from comment below
date('Y-m-d H:i:s', intval($songs->PLAYEDAT[0]))
8
solved Warning: date() expects parameter 2 to be long, object given in [closed]