yii\db\pgsql\QueryBuilder::batchInsert PHP Method

    public function batchInsert($table, $columns, $rows)
    {
        if (empty($rows)) {
            return '';
        }
        $schema = $this->db->getSchema();
        if (($tableSchema = $schema->getTableSchema($table)) !== null) {
            $columnSchemas = $tableSchema->columns;
        } else {
            $columnSchemas = [];
        }
        $values = [];
        foreach ($rows as $row) {
            $vs = [];
            foreach ($row as $i => $value) {
                if (isset($columns[$i], $columnSchemas[$columns[$i]]) && !is_array($value)) {
                    $value = $columnSchemas[$columns[$i]]->dbTypecast($value);
                }
                if (is_string($value)) {
                    $value = $schema->quoteValue($value);
                } elseif ($value === true) {
                    $value = 'TRUE';
                } elseif ($value === false) {
                    $value = 'FALSE';
                } elseif ($value === null) {
                    $value = 'NULL';
                }
                $vs[] = $value;
            }
            $values[] = '(' . implode(', ', $vs) . ')';
        }
        foreach ($columns as $i => $name) {
            $columns[$i] = $schema->quoteColumnName($name);
        }
        return 'INSERT INTO ' . $schema->quoteTableName($table) . ' (' . implode(', ', $columns) . ') VALUES ' . implode(', ', $values);
    }