mysqli_fetch_fields
(PHP 5 CVS only)
mysqli_fetch_fields
(no version information, might be only in CVS)
result->fetch_fields -- Returns an array of objects representing the fields in a result set
Description
Procedural Style:
mixed
mysqli_fetch_fields ( object result)
Object oriented style (method):
class
result {
mixed
fetch_fields ( void )
}
This function serves an identical purpose to the mysqli_fetch_field()
function with the single difference that, instead of returning one object at a time for
each field, the columns are returned as an array of objects. For a description of the
attributes of each object and their meaning, see the mysqli_fetch_field()
function.
Return values
Returns an array of objects which contains field definition informations or FALSE if no field information
is available.
Tabela 1. 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. |
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 integer fields) |
Example
Exemplo 1. Object oriented style
<?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(); }
$query = "SELECT Name, SurfaceArea from Country ORDER BY Code LIMIT 5";
if ($result = $mysqli->query($query)) {
/* Get field information for all columns */ $finfo = $result->fetch_fields();
for ($i=0; $i < count($finfo); $i++) { printf("Name: %s\n", $finfo[$i]->name); printf("Table: %s\n", $finfo[$i]->table); printf("max. Len: %d\n", $finfo[$i]->max_length); printf("Flags: %d\n", $finfo[$i]->flags); printf("Type: %d\n\n", $finfo[$i]->type); } $result->close(); }
/* close connection */ $mysqli->close(); ?>
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Exemplo 2. Procedural style
<?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(); }
$query = "SELECT Name, SurfaceArea from Country ORDER BY Code LIMIT 5";
if ($result = mysqli_query($link, $query)) {
/* Get field information for all columns */ $finfo = mysqli_fetch_fields($result); for ($i=0; $i < count($finfo); $i++) { printf("Name: %s\n", $finfo[$i]->name); printf("Table: %s\n", $finfo[$i]->table); printf("max. Len: %d\n", $finfo[$i]->max_length); printf("Flags: %d\n", $finfo[$i]->flags); printf("Type: %d\n\n", $finfo[$i]->type); } mysqli_free_result($result); }
/* close connection */ mysqli_close($link); ?>
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The above examples would produce the following output:
Name: Name
Table: Country
max. Len: 11
Flags: 1
Type: 254
Name: SurfaceArea
Table: Country
max. Len: 10
Flags: 32769
Type: 4 |