PHP 5.4.31 Released

maxdb_fetch_field

maxdb_result::fetch_field

(PECL maxdb >= 1.0)

maxdb_fetch_field -- maxdb_result::fetch_fieldReturns the next field in the result set

Beschreibung

Prozeduraler Stil

mixed maxdb_fetch_field ( resource $result )

Objektorientierter Stil

mixed maxdb_result::fetch_field ( void )

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

R√ľckgabewerte

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

Object properties
Property Description
name The name of the column
max_length The maximum width of the field for the result set.
type The data type used for this field
decimals The number of decimals used (for integer fields)

Beispiele

Beispiel #1 Objektorientierter Stil

<?php
$maxdb 
= new maxdb("localhost""MONA""RED""DEMODB");

/* check connection */
if (maxdb_connect_errno()) {
   
printf("Connect failed: %s\n"maxdb_connect_error());
   exit();
}

$query "SELECT name, cno from hotel.customer ORDER BY cno";

if (
$result $maxdb->query($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 */
$maxdb->close();
?>

Beispiel #2 Prozeduraler Stil

<?php
$link 
maxdb_connect("localhost""MONA""RED""DEMODB");

/* check connection */
if (maxdb_connect_errno()) {
   
printf("Connect failed: %s\n"maxdb_connect_error());
   exit();
}

$query "SELECT name, cno from hotel.customer ORDER BY cno";

if (
$result maxdb_query($link$query)) {

   
/* Get field information for all fields */
   
while ($finfo maxdb_fetch_field($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);
   }
   
maxdb_free_result($result);
}

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

Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:

Name:     NAME
Table:
max. Len: 10
Flags:    -1
Type:     2

Name:     CNO
Table:
max. Len: 4
Flags:    -1
Type:     0

Siehe auch

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