private static function checkSeqType($seqTp)
    {
        $seqTp = strtoupper($seqTp);

        if( in_array($seqTp, [self::SEQUENCE_TYPE_FIRST, self::SEQUENCE_TYPE_RECURRING,
                              self::SEQUENCE_TYPE_ONCE, self::SEQUENCE_TYPE_FINAL]) )
            return $seqTp;

        return false;
    }
private static function checkSeqType($seqTp)
    {
        $seqTp = strtoupper($seqTp);

        if( in_array($seqTp, [self::SEQUENCE_TYPE_FIRST, self::SEQUENCE_TYPE_RECURRING,
                              self::SEQUENCE_TYPE_ONCE, self::SEQUENCE_TYPE_FINAL]) )
            return $seqTp;

        return false;
    }
private static function checkSeqType ( $ seqTp ) { $ seqTp = strtoupper ( $ seqTp ) ; if ( in_array ( $ seqTp , [ self :: SEQUENCE_TYPE_FIRST , self :: SEQUENCE_TYPE_RECURRING , self :: SEQUENCE_TYPE_ONCE , self :: SEQUENCE_TYPE_FINAL ] ) ) return $ seqTp ; return false ; }
Checks if the sequence type is valid.

@param string $seqTp
@return string|false
Checks if the sequence type is valid .