PHP 8.4.0 Alpha 2 available for testing

pg_result_error_field

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

pg_result_error_fieldReturns an individual field of an error report

Description

pg_result_error_field(PgSql\Result $result, int $field_code): string|false|null

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.

Return Values

A string containing the contents of the error field, null if the field does not exist or false on failure.

Changelog

Version Description
8.1.0 The result parameter expects an PgSql\Result instance now; previously, a resource was expected.

Examples

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);
?>

See Also

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User Contributed Notes 1 note

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dev at gwouite dot fr
11 months ago
Complete list of field codes from libpq documentation...

Warning : they are prefixed with "PG_", just change to "PGSQL_" and they'll be available as defined PHP values.

For me, most importants fields are suffixed with a star ;)

PG_DIAG_SEVERITY
PG_DIAG_SEVERITY_NONLOCALIZED *
PG_DIAG_SQLSTATE *
PG_DIAG_MESSAGE_PRIMARY
PG_DIAG_MESSAGE_DETAIL
PG_DIAG_MESSAGE_HINT
PG_DIAG_STATEMENT_POSITION
PG_DIAG_INTERNAL_POSITION
PG_DIAG_INTERNAL_QUERY
PG_DIAG_CONTEXT
PG_DIAG_SCHEMA_NAME *
PG_DIAG_TABLE_NAME *
PG_DIAG_COLUMN_NAME *
PG_DIAG_DATATYPE_NAME *
PG_DIAG_CONSTRAINT_NAME
PG_DIAG_SOURCE_FILE
PG_DIAG_SOURCE_LINE
PG_DIAG_SOURCE_FUNCTION

Source and field codes details : https://www.postgresql.org/docs/current/libpq-exec.html
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