<?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)
pg_field_type_oid — Returns the type ID (OID) for the corresponding field number
Descrierea
pg_field_type_oid
( resource
$result
, int $field_number
) : int
pg_field_type_oid() returns an integer containing the
OID of the base type of the given field_number in the
given PostgreSQL result resource.
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.
Notă:
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.
Parametri
-
result -
PostgreSQL query result resource, returned by pg_query(), pg_query_params() or pg_execute() (among others).
-
field_number -
Field number, starting from 0.
Valorile întoarse
The OID of the field's base type. false is returned on error.
Exemple
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);
?>
Exemplul de mai sus va afișa:
Title field type OID: 1043
A se vedea și
- pg_field_type() - Returns the type name for the corresponding field number
- pg_field_prtlen() - Returns the printed length
- pg_field_name() - Returns the name of a field
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.
