Php/docs/function.pg-field-type-oid
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
说明
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.
Note:
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.
参数
result- PostgreSQL query result resource, returned by pg_query(), pg_query_params() or pg_execute() (among others).
field_number- Field number, starting from 0.
返回值
The OID of the field's base type. false is returned on error.
范例
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);?>
以上例程会输出：
Title field type OID: 1043
