Zend_Db_Table_Abstract::insert PHP Method

    public function insert(array $data)
    {
        $this->_setupPrimaryKey();
        /**
         * Zend_Db_Table assumes that if you have a compound primary key
         * and one of the columns in the key uses a sequence,
         * it's the _first_ column in the compound key.
         */
        $primary = (array) $this->_primary;
        $pkIdentity = $primary[(int) $this->_identity];
        /**
         * If this table uses a database sequence object and the data does not
         * specify a value, then get the next ID from the sequence and add it
         * to the row.  We assume that only the first column in a compound
         * primary key takes a value from a sequence.
         */
        if (is_string($this->_sequence) && !isset($data[$pkIdentity])) {
            $data[$pkIdentity] = $this->_db->nextSequenceId($this->_sequence);
            $pkSuppliedBySequence = true;
        }
        /**
         * If the primary key can be generated automatically, and no value was
         * specified in the user-supplied data, then omit it from the tuple.
         * 
         * Note: this checks for sensible values in the supplied primary key
         * position of the data.  The following values are considered empty:
         *   null, false, true, '', array()
         */
        if (!isset($pkSuppliedBySequence) && array_key_exists($pkIdentity, $data)) {
            if ($data[$pkIdentity] === null || $data[$pkIdentity] === '' || is_bool($data[$pkIdentity]) || is_array($data[$pkIdentity]) && empty($data[$pkIdentity])) {
                // empty array
                unset($data[$pkIdentity]);
            }
        }
        /**
         * INSERT the new row.
         */
        $tableSpec = ($this->_schema ? $this->_schema . '.' : '') . $this->_name;
        $this->_db->insert($tableSpec, $data);
        /**
         * Fetch the most recent ID generated by an auto-increment
         * or IDENTITY column, unless the user has specified a value,
         * overriding the auto-increment mechanism.
         */
        if ($this->_sequence === true && !isset($data[$pkIdentity])) {
            $data[$pkIdentity] = $this->_db->lastInsertId();
        }
        /**
         * Return the primary key value if the PK is a single column,
         * else return an associative array of the PK column/value pairs.
         */
        $pkData = array_intersect_key($data, array_flip($primary));
        if (count($primary) == 1) {
            reset($pkData);
            return current($pkData);
        }
        return $pkData;
    }

 public function update($id, $state, $info)
 {
     $data = array('state' => $state, 'info' => $info, 'lastupdate' => time());
     $found = $this->find($id);
     if ($found) {
         $data = array_merge($found, $data);
         unset($data['id']);
         $this->dbTable->update($data, array('id = ?' => $id));
     } else {
         $data['id'] = $id;
         $data['sticked'] = 0;
         $this->dbTable->insert($data);
     }
 }