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Dieses Dokument verwendet PHP-Handbuch für chinesische Websites Freigeben
(PHP 5 >= 5.1.0)
pg_result_error_field — Returns an individual field of an error report.
$result
, int $fieldcode
) pg_result_error_field() returns one of the detailed error message
fields associated with result
resource. It is only available
against a PostgreSQL 7.4 or above server. The error field is specified by
the fieldcode
.
Because pg_query() and pg_query_params() return FALSE
if the query fails,
you must use pg_send_query() and
pg_get_result() to get the result handle.
If you need to get additional error information from failed pg_query() queries, use pg_set_error_verbosity() and pg_last_error() and then parse the result.
result
A PostgreSQL query result resource from a previously executed statement.
fieldcode
Possible fieldcode
values are: PGSQL_DIAG_SEVERITY
,
PGSQL_DIAG_SQLSTATE
, PGSQL_DIAG_MESSAGE_PRIMARY
,
PGSQL_DIAG_MESSAGE_DETAIL
,
PGSQL_DIAG_MESSAGE_HINT
, PGSQL_DIAG_STATEMENT_POSITION
,
PGSQL_DIAG_INTERNAL_POSITION
(PostgreSQL 8.0+ only),
PGSQL_DIAG_INTERNAL_QUERY
(PostgreSQL 8.0+ only),
PGSQL_DIAG_CONTEXT
, PGSQL_DIAG_SOURCE_FILE
,
PGSQL_DIAG_SOURCE_LINE
or
PGSQL_DIAG_SOURCE_FUNCTION
.
A string containing the contents of the error field, NULL
if the field does not exist or FALSE
on failure.
Example #1 pg_result_error_field() example
<?php
$dbconn = pg_connect ( "dbname=publisher" ) or die( "Could not connect" );
if (! pg_connection_busy ( $dbconn )) {
pg_send_query ( $dbconn , "select * from doesnotexist;" );
}
$res1 = pg_get_result ( $dbconn );
echo pg_result_error_field ( $res1 , PGSQL_DIAG_SQLSTATE );
?>