Oracle 5.0, Reference Manual

Page: 2508 / 3232

MySQL Improved Extension (
Mysqli
)
2488
Returns an object which contains field definition information from the specified result set.
Parameters
result
Procedural style only: A result set identifier returned
by
mysqli_query
,
mysqli_store_result
or
mysqli_use_result
.
fieldnr
The field number. This value must be in the range from
0
to
number
of fields - 1
.
Return Values
Returns an object which contains field definition information or
FALSE
if no field information for
specified
fieldnr
is available.
Table 20.51. Object attributes
Attribute 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.
length The width of the field, as specified in the table
definition.
charsetnr The character set number for the field.
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)
Examples
Example 20.191. 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);