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Last updated: Sat, 27 Jan 2007

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# fbsql_fetch_field

(PHP 4 >= 4.0.6, PHP 5)

fbsql_fetch_field -- Get column information from a result and return as an object

## Описание

object fbsql_fetch_field ( resource result [, int field_offset] )

Used in order to obtain information about fields in a certain query result.

## Список параметров

`result`

  A result identifier returned by fbsql_query() or fbsql_db_query().

`field_offset`

  The numerical offset of the field. The field index starts at 0. If not specified, the next field that wasn't yet retrieved by fbsql_fetch_field() is retrieved.

## Возвращаемые значения

Returns an object containing field information, or `FALSE` on errors.

The properties of the object are:

- name - column name

- table - name of the table the column belongs to

- max_length - maximum length of the column

- not_null - 1 if the column cannot be `NULL`

- type - the type of the column

## Примеры

Пример 1. fbsql_fetch_field() example

`<?php
fbsql_connect($host, $user, $password)
or die("Could not connect");
$result = fbsql_db_query("database", "select * from table")
or die("Query failed");
# get column metadata
$i = 0;
while ($i < fbsql_num_fields($result)) {
echo "Information for column $i:<br />\n";
$meta = fbsql_fetch_field($result);
if (!$meta) {
echo "No information available<br />\n";
}
echo "<pre>
max_length: $meta->max_length
name: $meta->name
not_null: $meta->not_null
table: $meta->table
type: $meta->type
</pre>";
$i++;
}
fbsql_free_result($result);
?>`

## Смотрите также

fbsql_field_seek()

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Last updated: Sat, 27 Jan 2007
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