<?php
private function mapping($q, $result)
{
$types = [];
for ($i = 0, $count = \pg_num_fields($q); $i < $count; ++$i) {
$types[$i] = \pg_field_type_oid($q, $i);
}
foreach ($result as $k => &$row) {
$i = -1;
foreach ($row as $name => &$value) {
++$i;
if ($value === null) {
continue;
}
switch ($types[$i]) {
case 20:
case 21:
case 23: $value = (int)$value; break;
case 16507: /*$value = (string)$value; */break;
default:
throw new \RuntimeException(
\pg_field_type($q, $i) .' type. Need mapping ' . \pg_field_type_oid($q, $i)
);
}
}
}
unset($value, $row);
return $result;
}
?>
pg_field_type_oid
(PHP 5 >= 5.1.0, PHP 7, PHP 8)
pg_field_type_oid — Returns the type ID (OID) for the corresponding field number
Descrizione
pg_field_type_oid() returns an integer containing the
OID of the base type of the given field in the
given result instance.
You can get more information about the field type by querying PostgreSQL's
pg_type system table using the OID obtained with this function.
The PostgreSQL format_type() function will convert a
type OID into an SQL standard type name.
Nota:
If the field uses a PostgreSQL domain (rather than a basic type), it is the OID of the domain's underlying type that is returned, rather than the OID of the domain itself.
Elenco dei parametri
-
result -
An PgSql\Result instance, returned by pg_query(), pg_query_params() or pg_execute()(among others).
-
field -
Field number, starting from 0.
Valori restituiti
The OID of the field's base type.
Log delle modifiche
| Versione | Descrizione |
|---|---|
| 8.1.0 |
The result parameter expects an PgSql\Result
instance now; previously, a resource was expected.
|
Esempi
Example #1 Getting information about fields
<?php
$dbconn = pg_connect("dbname=publisher") or die("Could not connect");
// Assume 'title' is a varchar type
$res = pg_query($dbconn, "select title from authors where author = 'Orwell'");
echo "Title field type OID: ", pg_field_type_oid($res, 0);
?>Il precedente esempio visualizzerà:
Title field type OID: 1043
Vedere anche:
- pg_field_type() - Restituisce il nome del tipo del campo specificato
- pg_field_prtlen() - Restituisce la lunghezza "stampabile" di un valore
- pg_field_name() - Restituisce il nome di un campo
add a note
User Contributed Notes 2 notes
stanislav dot perfilov at gmail dot com ¶
3 years ago
mauroi at digbang dot com ¶
19 years ago
This function can be used to improve the performance of your application.
pg_field_type() makes an internal query to the pg_type table and it can be really slow.
So if your application previously know the oids of your database, you can save the execution time of this query in every request.
