# cubrid_field_len

(PECL CUBRID >= 8.3.0)

cubrid_field_len — Get the maximum length of the specified field

### 说明

cubrid_field_len ( resource `$result` , int `$field_offset` ) : int

This function returns the maximum length of the specified field on success, or it returns FALSE on failure.

### 参数

`result`

  `result` comes from a call to cubrid_execute()

`field_offset`

  The numerical field offset. The `field_offset` starts at 0. If `field_offset` does not exist, an error of level `E_WARNING` is also issued.

### 返回值

Maximum length, when process is successful.

`FALSE` on failure.

### 范例

Example #1 cubrid_field_len() example

    <?php
    $conn = cubrid_connect("localhost", 33000, "demodb");
    $result = cubrid_execute($conn, "SELECT * FROM game WHERE host_year=2004 AND nation_code='AUS' AND medal='G'");

    $column_names = cubrid_column_names($result);
    $column_types = cubrid_column_types($result);

    printf("%-30s %-30s %-15s\n", "Column Names", "Column Types", "Column Maxlen");
    for($i = 0, $size = count($column_names); $i < $size; $i++) {
        $column_len = cubrid_field_len($result, $i);
        printf("%-30s %-30s %-15s\n", $column_names[$i], $column_types[$i], $column_len);
    }

    cubrid_disconnect($conn);
    ?>

以上例程会输出：

    Column Names                   Column Types                   Column Maxlen
    host_year                      integer                        11
    event_code                     integer                        11
    athlete_code                   integer                        11
    stadium_code                   integer                        11
    nation_code                    char                           3
    medal                          char                           1
    game_date                      date                           10