Руководство по PHP
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# mysqli_fetch_field_direct

(PHP 5)

mysqli_fetch_field_direct

(no version information, might be only in CVS)

result->fetch_field_direct -- Fetch meta-data for a single field

## Description

Procedural style:

object mysqli_fetch_field_direct ( mysqli_result result, int fieldnr )

Object oriented style (method):

class mysqli_result {
object fetch_field_direct ( int fieldnr )
}

mysqli_fetch_field_direct() returns an object which contains field definition informations from specified resultset. The value of fieldnr must be in the range from 0 to number of fields - 1.

## Возвращаемые значения

Returns an object which contains field definition information or `FALSE` if no field information for specified fieldnr is available.

Таблица 1. Object attributes

Attribute | Description
--- | ---
name | The name of the column
orgname | Original column name if an alias was specified
table | The name of the table this field belongs to (if not calculated)
orgtable | Original table name if an alias was specified
def | The default value for this field, represented as a string
max_length | The maximum width of the field for the result set.
length | The width of the field, as specified in the tabl definition.
charsetnr | The character set number for the field.
flags | An integer representing the bit-flags for the field.
type | The data type used for this field
decimals | The number of decimals used (for integer fields)

## Смотрите также

mysqli_num_fields(), mysqli_fetch_field() и mysqli_fetch_fields().

## Примеры

Пример 1. Object oriented style

`<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$query = "SELECT Name, SurfaceArea from Country ORDER BY Name LIMIT 5";
if ($result = $mysqli->query($query)) {
/* Get field information for column 'SurfaceArea' */
$finfo = $result->fetch_field_direct(1);
printf("Name: %s\n", $finfo->name);
printf("Table: %s\n", $finfo->table);
printf("max. Len: %d\n", $finfo->max_length);
printf("Flags: %d\n", $finfo->flags);
printf("Type: %d\n", $finfo->type);
$result->close();
}
/* close connection */
$mysqli->close();
?>`

Пример 2. Procedural style

`<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$query = "SELECT Name, SurfaceArea from Country ORDER BY Name LIMIT 5";
if ($result = mysqli_query($link, $query)) {
/* Get field information for column 'SurfaceArea' */
$finfo = mysqli_fetch_field_direct($result, 1);
printf("Name: %s\n", $finfo->name);
printf("Table: %s\n", $finfo->table);
printf("max. Len: %d\n", $finfo->max_length);
printf("Flags: %d\n", $finfo->flags);
printf("Type: %d\n", $finfo->type);
mysqli_free_result($result);
}
/* close connection */
mysqli_close($link);
?>`

Результат выполнения данного примера:

    Name:     SurfaceArea
    Table:    Country
    max. Len: 10
    Flags:    32769
    Type:     4

Пред. | Начало | След.
mysqli_fetch_assoc | Уровень выше | mysqli_fetch_field