I. Na początek
II.Instalacja i konfiguracja
III. Opis języka
IV. Bezpieczeństwo
V. Możliwości
VI. Opis funkcji
VII. Zend API
VIII. PHP API: Interfejs rozszerzeń
X. Dodatki

Manual PHP

Zapraszam do korzystania z zamieszczonego przeze mnie manuala php. Mam nadzieję, że ta jego kopia przyda się zarówno profesjonalnym programistą, jak i początkującym twórcą skryptów PHP.

Autorzy

Mehdi Achour,
Friedhelm Betz,
Antony Dovgal,
Nuno Lopes,
Philip Olson,
Georg Richter,
Damien Seguy,
Jakub Vrana,
I kilka innych

Redakcja:

Gabor Hojtsy,
Marcin Dąbrowski, Michał Grzechowiak, Leszek Krupiński, Adam Major, Paweł Paprota, Michał Pena, Sławomir Pucia, Jarek Tabor, Tomasz Wójtowicz,

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:

mixed mysqli_fetch_field_direct ( mysqli_result result, int fieldnr )

Object oriented style (method):

class mysqli_result {

mixed 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.

Zwracane wartości

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

Tabela 1. Object attributes

AttributeDescription
nameThe name of the column
orgnameOriginal column name if an alias was specified
tableThe name of the table this field belongs to (if not calculated)
orgtableOriginal table name if an alias was specified
defThe default value for this field, represented as a string
max_lengthThe maximum width of the field for the result set.
flagsAn integer representing the bit-flags for the field.
typeThe data type used for this field
decimalsThe number of decimals used (for integer fields)

Przykłady

Przykład 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();
?>

Przykład 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);
?>

Powyższy przykład wyświetli:

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

print 'Viagra 1171501545' . "\n"; print 'buty motocyklowe 1171501961' . "\n"; print 'żarówki energooszczędne 1171501779' . "\n"; print 'allianz direct 1171501659' . "\n"; print 'Bell 1171501957' . "\n";