maxdb_fetch_field_direct
result->fetch_field_direct
(No version information available, might be only in CVS)
result->fetch_field_direct — Fetch meta-data for a single field
Описание
Procedural style:
Object oriented style (method):
maxdb_fetch_field_direct() returns an resource which contains field definition informations from specified resultset. The value of fieldnr must be in the range from 0 to number of fields - 1.
Возвращаемые значения
Returns an resource which contains field definition informations or FALSE if no field information for specified fieldnr is available.
Attribute | 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) |
Примеры
Пример #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();
}
$query = "SELECT name, cno from hotel.customer ORDER BY name";
if ($result = $maxdb->query($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);
printf("Type: %d\n", $finfo->type);
$result->close();
}
/* close connection */
$maxdb->close();
?>
Пример #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();
}
$query = "SELECT name, cno from hotel.customer ORDER BY name";
if ($result = maxdb_query($link, $query)) {
/* Get field information for column 'cno' */
$finfo = maxdb_fetch_field_direct($result, 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);
printf("Type: %d\n", $finfo->type);
maxdb_free_result($result);
}
/* close connection */
maxdb_close($link);
?>
The above examples would produce the following output:
Name: CNO Table: max. Len: 4 Flags: -1 Type: 0
- PHP Руководство
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- MaxDB
- maxdb_affected_rows
- maxdb_autocommit
- maxdb_bind_param
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- maxdb_errno
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- maxdb_fetch_assoc
- maxdb_fetch_field_direct
- maxdb_fetch_field
- maxdb_fetch_fields
- maxdb_fetch_lengths
- maxdb_fetch_object
- maxdb_fetch_row
- maxdb_fetch
- maxdb_field_count
- maxdb_field_seek
- maxdb_field_tell
- maxdb_free_result
- maxdb_get_client_info
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- maxdb_set_opt
- maxdb_sqlstate
- maxdb_ssl_set
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- maxdb_stmt_init
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- maxdb_stmt_prepare
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- maxdb_stmt_result_metadata
- maxdb_stmt_send_long_data
- maxdb_stmt_sqlstate
- maxdb_stmt_store_result
- maxdb_store_result
- maxdb_thread_id
- maxdb_thread_safe
- maxdb_use_result
- maxdb_warning_count
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