Fetch meta-data for a single field

# mysqli_result::fetch_field_direct

# mysqli_fetch_field_direct

(PHP 5, PHP 7)

mysqli_result::fetch_field_direct -- mysqli_fetch_field_direct — Fetch meta-data for a single field

### Descrierea

Stil obiect-orientat

mysqli_result::fetch_field_direct ( int `$fieldnr` ) : object

Stil procedural

mysqli_fetch_field_direct ( mysqli_result `$result` , int `$fieldnr` ) : object

Returns an object which contains field definition information from the specified result set.

### Parametri

`result`

  Numai stilul procedural: Un identificator al setului de rezultate întors de mysqli_query(), mysqli_store_result() sau mysqli_use_result ().

`fieldnr`

  The field number. This value must be in the range from 0 to number of fields - 1.

### Valorile întoarse

Returns an object which contains field definition information or `FALSE` if no field information for specified fieldnr is available.

Object attributes
Attribute | Description
--- | ---
name | The name of the column
orgname | Original column name if an alias was specified
table | The name of the table this field belongs to (if not calculated)
orgtable | Original table name if an alias was specified
def | The default value for this field, represented as a string
max_length | The maximum width of the field for the result set.
length | The width of the field, as specified in the table definition.
charsetnr | The character set number for the field.
flags | An integer representing the bit-flags for the field.
type | The data type used for this field
decimals | The number of decimals used (for numeric fields)

### Exemple

Example #1 Stil obiect-orientat

`<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$query = "SELECT Name, SurfaceArea from Country ORDER BY Name LIMIT 5";
if ($result = $mysqli->query($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 */
$mysqli->close();
?>`

Example #2 Stil procedural

`<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$query = "SELECT Name, SurfaceArea from Country ORDER BY Name LIMIT 5";
if ($result = mysqli_query($link, $query)) {
/* Get field information for column 'SurfaceArea' */
$finfo = mysqli_fetch_field_direct($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", $finfo->type);
mysqli_free_result($result);
}
/* close connection */
mysqli_close($link);
?>`

Exemplele de mai sus vor afișa:

    Name:     SurfaceArea
    Table:    Country
    max. Len: 10
    Flags:    32769
    Type:     4

### A se vedea și

- mysqli_num_fields() - Get the number of fields in a result
- mysqli_fetch_field() - Returns the next field in the result set
- mysqli_fetch_fields() - Returns an array of objects representing the fields in a result set