LaravelConf Taiwan 2020 CFP Started

pg_field_table

(PHP 5 >= 5.2.0, PHP 7)

pg_field_tableReturns 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($res0);
echo 
pg_field_table($res0true);

$res pg_query($dbconn"SELECT version()");
var_dump(pg_field_table($res0));
?>

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

add a note add a note

User Contributed Notes

There are no user contributed notes for this page.
To Top