maxdb_fetch_field
(PECL)
maxdb_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
maxdb_fetch_field ( resource result )
Object oriented style (method):
class
result {
mixed
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.
Return values
Returns an resource which contains field definition informations or FALSE if no field information
is available.
Table 1. 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) |
Example
Example 1. Object oriented style
<?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(); ?>
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Example 2. Procedural style
<?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); ?>
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The above examples would produce the following output:
Name: NAME
Table:
max. Len: 10
Flags: -1
Type: 2
Name: CNO
Table:
max. Len: 4
Flags: -1
Type: 0 |