mysqli_fetch

PHP Handbuch
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Description

Procedural Style:

array mysqli_fetch_fields ( mysqli_result result )

Object oriented style (method):

class mysqli_result {

array fetch_fields ( void )

}

This function serves an identical purpose to the mysqli_fetch_field() function with the single difference that, instead of returning one object at a time for each field, the columns are returned as an array of objects.

Rückgabewerte

Returns an array of objects which contains field definition information or FALSE if no field information is available.

Tabelle 1. Object properties

Property	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.
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)

Siehe auch

mysqli_num_fields(), mysqli_fetch_field() und mysqli_fetch_field_direct().

Beispiele

Beispiel 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 */
    $finfo = $result->fetch_fields();

    foreach ($finfo as $val) {
        printf("Name:     %s\n", $val->name);
        printf("Table:    %s\n", $val->table);
        printf("max. Len: %d\n", $val->max_length);
        printf("Flags:    %d\n", $val->flags);
        printf("Type:     %d\n\n", $val->type);
    }    
    $result->close();
}

/* close connection */
$mysqli->close();
?>

Beispiel 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 columns */
    $finfo = mysqli_fetch_fields($result);
 
    foreach ($finfo as $val) {
        printf("Name:     %s\n", $val->name);
        printf("Table:    %s\n", $val->table);
        printf("max. Len: %d\n", $val->max_length);
        printf("Flags:    %d\n", $val->flags);
        printf("Type:     %d\n\n", $val->type);
    }    
    mysqli_free_result($result);
}

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

Das oben gezeigte Beispiel erzeugt folgende Ausgabe:

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

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

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