mysql_field_flags

Get the flags associated with the specified field in a result

&mysql.alternative.note;

- `mysqli_fetch_field_direct` [flags]
- `PDOStatement::getColumnMeta` [flags]

&reftitle.description; ``string``false```mysql_field_flags` `resource` `result` `int` `field_offset`

`mysql_field_flags` returns the field flags of the specified field. The flags are reported as a single word per flag separated by a single space, so that you can split the returned value using `explode`.

&reftitle.parameters;

&mysql.result.description; &mysql.field-offset.req.description;
&reftitle.returnvalues;

Returns a string of flags associated with the result&return.falseforfailure;.

The following flags are reported, if your version of MySQL is current enough to support them: `"not_null"`, `"primary_key"`, `"unique_key"`, `"multiple_key"`, `"blob"`, `"unsigned"`, `"zerofill"`, `"binary"`, `"enum"`, `"auto_increment"` and `"timestamp"`.

&reftitle.examples;

### A `mysql_field_flags` example

    <?php
    $result = mysql_query("SELECT id,email FROM people WHERE id = '42'");
    if (!$result) {
        echo 'Could not run query: ' . mysql_error();
        exit;
    }
    $flags = mysql_field_flags($result, 0);

    echo $flags;
    print_r(explode(' ', $flags));
    ?>

&example.outputs.similar;

    not_null primary_key auto_increment
    Array
    (
        [0] => not_null
        [1] => primary_key
        [2] => auto_increment
    )

&reftitle.notes;

&info.deprecated.alias; `mysql_fieldflags`

&reftitle.seealso;

- `mysql_field_type`
- `mysql_field_len`