# cubrid_fetch_field

(PECL CUBRID >= 8.3.1)

cubrid_fetch_field — Get column information from a result and return as an object

### 说明

cubrid_fetch_field ( resource `$result` [, int `$field_offset` = 0 ] ) : object

This function returns an object with certain properties of the specific column. The properties of the object are:

`name`

  column name

`table`

  name of the table that the column belongs to

`def`

  default value of the column

`max_length`

  maximum length of the column

`not_null`

  1 if the column cannot be NULL

`primary_key`

  1 if the column is a primary key

`unique_key`

  1 if the column is an unique key

`multiple_key`

  1 if the column is a non-unique key

`numeric`

  1 if the column is numeric

`blob`

  1 if the column is a BLOB

`type`

  the type of the column

`unsigned`

  1 if the column is unsigned

`zerofill`

  1 if the column is zero-filled

### 参数

`result`

  `result` comes from a call to cubrid_execute()

`field_offset`

  The numerical field offset. If the field offset is not specified, the next field (that was not yet retrieved by this function) is retrieved. The `field_offset` starts at 0.

### 返回值

Object with certain properties of the specific column, when process is successful.

`FALSE` on failure.

### 范例

Example #1 cubrid_fetch_field() example

    <?php
    $conn = cubrid_connect("localhost", 33000, "demodb");
    $req = cubrid_execute($conn, "SELECT event_code,athlete_code,nation_code,game_date FROM game WHERE host_year=1988 and event_code=20001;");

    var_dump(cubrid_fetch_row($req));

    cubrid_field_seek($req, 1);
    $field = cubrid_fetch_field($req);

    printf("\n--- Field Properties ---\n");
    printf("%-30s %s\n", "name:", $field->name);
    printf("%-30s %s\n", "table:", $field->table);
    printf("%-30s \"%s\"\n", "default value:", $field->def);
    printf("%-30s %d\n", "max length:", $field->max_length);
    printf("%-30s %d\n", "not null:", $field->not_null);
    printf("%-30s %d\n", "primary key:", $field->primary_key);
    printf("%-30s %d\n", "unique key:", $field->unique_key);
    printf("%-30s %d\n", "multiple key:", $field->multiple_key);
    printf("%-30s %d\n", "numeric:", $field->numeric);
    printf("%-30s %d\n", "blob:", $field->blob);
    printf("%-30s %s\n", "type:", $field->type);
    printf("%-30s %d\n", "unsigned:", $field->unsigned);
    printf("%-30s %d\n", "zerofill:", $field->zerofill);

    cubrid_close_request($req);

    cubrid_disconnect($conn);
    ?>

以上例程会输出：

    array(4) {
      [0]=>
      string(5) "20001"
      [1]=>
      string(5) "16681"
      [2]=>
      string(3) "KOR"
      [3]=>
      string(9) "1988-9-30"
    }

    --- Field Properties ---
    name:                          athlete_code
    table:                         game
    default value:                 ""
    max length:                    0
    not null:                      1
    primary key:                   1
    unique key:                    1
    multiple key:                  0
    numeric:                       1
    blob:                          0
    type:                          integer
    unsigned:                      0
    zerofill:                      0