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

(PHP 5)

mysqli_fetch_field

(no version information, might be only in CVS)

result->fetch_field -- Returns the next field in the result set

Description

Procedural style:

mixed mysqli_fetch_field ( mysqli_result result )

Object oriented style (method):

class mysqli_result {

mixed fetch_field ( void )

}

The mysqli_fetch_field() returns the definition of one column of a result set as an object. Call this function repeatedly to retrieve information about all columns in the result set. mysqli_fetch_field() returns FALSE when no more fields are left.

Zwracane wartości

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

Tabela 1. Object properties

PropertyDescription
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 Code LIMIT 5";

if (
$result = $mysqli->query($query)) {

    
/* Get field information for all columns */
    
while ($finfo = $result->fetch_field()) {

        
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\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 Code LIMIT 5";

if (
$result = mysqli_query($link, $query)) {

    
/* Get field information for all fields */
    
while ($finfo = mysqli_fetch_field($result)) {

        
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\n", $finfo->type);
    }
    
mysqli_free_result($result);
}

/* close connection */
mysqli_close($link);
?>

Powyższy przykład wyświetli:

Name:     Name
Table:    Country
max. Len: 11
Flags:    1
Type:     254

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

print 'ubezpieczenia 1171501673' . "\n"; print 'Przeprowadzki Zabrze 1171501835' . "\n"; print 'faktura online 1171501923' . "\n"; print 'remonty Katowice 1171501578' . "\n"; print 'ubezpieczenia samochodu kalkulator 1171501693' . "\n";