Return a string with the flags of the given field offset

# cubrid_field_flags

(PECL CUBRID >= 8.3.0)

cubrid_field_flags — Return a string with the flags of the given field offset

### Description

cubrid_field_flags(resource `$result`, int `$field_offset`): string

This function returns a string with the flags of the given field offset separated by space. You can split the returned value using explode. The possible flags could be: `not_null`, `primary_key`, `unique_key`, `foreign_key`, `auto_increment`, `shared`, `reverse_index`, `reverse_unique` and `timestamp`.

### Parameters

`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.

### Return Values

A string with flags, when process is successful.

`false` when invalid field_offset value.

-1 if SQL sentence is not SELECT.

### Examples

Example #1 cubrid_field_flags() 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'");
$col_num = cubrid_num_cols($result);
printf("%-30s %s\n", "Field Name", "Field Flags");
for($i = 0; $i < $col_num; $i++) {
printf("%-30s %s\n", cubrid_field_name($result, $i), cubrid_field_flags($result, $i));
}
cubrid_disconnect($conn);
?>`

The above example will output:

    Field Name                     Field Flags
    host_year                      not_null primary_key unique_key
    event_code                     not_null primary_key unique_key foreign_key
    athlete_code                   not_null primary_key unique_key foreign_key
    stadium_code                   not_null
    nation_code
    medal
    game_date

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