pg_result_error_field
(PHP 5 >= 5.1.0, PHP 7, PHP 8)
pg_result_error_field — Returns an individual field of an error report
說明
pg_result_error_field() returns one of the detailed error message
fields associated with result instance. It is only available
against a PostgreSQL 7.4 or above server. The error field is specified by
the field_code.
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.
參數
-
result -
An PgSql\Result instance, returned by pg_query(), pg_query_params() or pg_execute()(among others).
-
field_code -
Possible
field_codevalues 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_LINEorPGSQL_DIAG_SOURCE_FUNCTION.
返回值
A string containing the contents of the error field, null if the field does not exist or false
on failure.
更新日誌
| 版本 | 說明 |
|---|---|
| 8.1.0 |
現在 result 參數接受 PgSql\Result
實例，之前接受 資源(resource)。
|
範例
示例 #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);
?>