# pg_field_table

(PHP 5 >= 5.2.0, PHP 7)

pg_field_table — Returns the name or oid of the tables field

### 说明

pg_field_table ( resource `$result` , int `$field_number` [, bool `$oid_only` = `FALSE` ] ) : mixed

pg_field_table() returns the name of the table that field belongs to, or the table's oid if `oid_only` is `TRUE`.

### 参数

`result`

  PostgreSQL query result resource, returned by pg_query(), pg_query_params() or pg_execute() (among others).

`field_number`

  Field number, starting from 0.

`oid_only`

  By default the tables name that field belongs to is returned but if `oid_only` is set to `TRUE`, then the oid will instead be returned.

### 返回值

On success either the fields table name or oid. Or, `FALSE` on failure.

### 范例

Example #1 Getting table information about a field

    <?php
    $dbconn = pg_connect("dbname=publisher") or die("Could not connect");

    $res = pg_query($dbconn, "SELECT bar FROM foo");

    echo pg_field_table($res, 0);
    echo pg_field_table($res, 0, true);

    $res = pg_query($dbconn, "SELECT version()");
    var_dump(pg_field_table($res, 0));
    ?>

以上例程的输出类似于：

    foo
    14379580

    bool(false)

### 注释

> Note:

> Returning the oid is much faster than returning the table name because fetching the table name requires a query to the database system table.

### 参见

- pg_field_name() - 返回字段的名字
- pg_field_type() - 返回相应字段的类型名称