mysqli_fetch_fields

(PHP 5)

mysqli_fetch_fields

(no version information, might be only in CVS)

result->fetch_fields -- Returns an array of objects representing the fields in a result set

Description

Procedural Style:

mixed mysqli_fetch_fields ( object result)

Object oriented style (method):

class result {

mixed 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.

Return values

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

Table 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)

See also

mysqli_num_fields() mysqli_fetch_field() mysqli_fetch_field_direct()

Example

Example 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();

    for (
$i=0; $i < count($finfo); $i++) {
        
printf("Name:     %s\n", $finfo[$i]->name);
        
printf("Table:    %s\n", $finfo[$i]->table);
        
printf("max. Len: %d\n", $finfo[$i]->max_length);
        
printf("Flags:    %d\n", $finfo[$i]->flags);
        
printf("Type:     %d\n\n", $finfo[$i]->type);
    }    
    
$result->close();
}

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

Example 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);

    for (
$i=0; $i < count($finfo); $i++) {
        
printf("Name:     %s\n", $finfo[$i]->name);
        
printf("Table:    %s\n", $finfo[$i]->table);
        
printf("max. Len: %d\n", $finfo[$i]->max_length);
        
printf("Flags:    %d\n", $finfo[$i]->flags);
        
printf("Type:     %d\n\n", $finfo[$i]->type);
    }    
    
mysqli_free_result($result);
}

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

The above examples would produce the following output:

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

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

Sites of interest: Web Hosting : Reseller Hosting : Website Hosting : HTML Editor : Web Design Templates : Free Web Hosting : ASP code examples : PHP & MySQL Code Examples
  Copyright 2004 Evrsoft Developer Network. Privacy policy - Link to Us

Contact Evrsoft