DB\SQL\Mapper::insert PHP Метод

    function insert()
    {
        $args = [];
        $actr = 0;
        $nctr = 0;
        $fields = '';
        $values = '';
        $filter = '';
        $pkeys = [];
        $nkeys = [];
        $ckeys = [];
        $inc = NULL;
        foreach ($this->fields as $key => $field) {
            if ($field['pkey']) {
                $pkeys[$key] = $field['previous'];
            }
        }
        if (isset($this->trigger['beforeinsert']) && \Base::instance()->call($this->trigger['beforeinsert'], [$this, $pkeys]) === FALSE) {
            return $this;
        }
        foreach ($this->fields as $key => &$field) {
            if ($field['pkey']) {
                $field['previous'] = $field['value'];
                if (!$inc && $field['pdo_type'] == \PDO::PARAM_INT && empty($field['value']) && !$field['nullable']) {
                    $inc = $key;
                }
                $filter .= ($filter ? ' AND ' : '') . $this->db->quotekey($key) . '=?';
                $nkeys[$nctr + 1] = [$field['value'], $field['pdo_type']];
                $nctr++;
            }
            if ($field['changed'] && $key != $inc) {
                $fields .= ($actr ? ',' : '') . $this->db->quotekey($key);
                $values .= ($actr ? ',' : '') . '?';
                $args[$actr + 1] = [$field['value'], $field['pdo_type']];
                $actr++;
                $ckeys[] = $key;
            }
            $field['changed'] = FALSE;
            unset($field);
        }
        if ($fields) {
            $this->db->exec((preg_match('/mssql|dblib|sqlsrv/', $this->engine) && array_intersect(array_keys($pkeys), $ckeys) ? 'SET IDENTITY_INSERT ' . $this->table . ' ON;' : '') . 'INSERT INTO ' . $this->table . ' (' . $fields . ') ' . 'VALUES (' . $values . ')', $args);
            $seq = NULL;
            if ($this->engine == 'pgsql') {
                $names = array_keys($pkeys);
                $aik = end($names);
                if ($this->fields[$aik]['pdo_type'] == \PDO::PARAM_INT) {
                    $seq = $this->source . '_' . $aik . '_seq';
                }
            }
            if ($this->engine != 'oci' && !($this->engine == 'pgsql' && !$seq)) {
                $this->_id = $this->db->lastinsertid($seq);
            }
            // Reload to obtain default and auto-increment field values
            if ($inc || $filter) {
                $this->load($inc ? [$inc . '=?', $this->db->value($this->fields[$inc]['pdo_type'], $this->_id)] : [$filter, $nkeys]);
            }
            if (isset($this->trigger['afterinsert'])) {
                \Base::instance()->call($this->trigger['afterinsert'], [$this, $pkeys]);
            }
        }
        return $this;
    }