note 40816 added to function.pg-result-error
| From: | php-general at lists dot php dot net | Date: | Mon, 15 Mar 2004 21:12:16 +0000 |
| Subject: | note 40816 added to function.pg-result-error | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-66881@lists.php.net to get a copy of this message | ||
Because pg_query() returns FALSE if the query fails, you must must use pg_send_query() and
pg_get_result() to get the result handle.
PostgreSQL 7.4 introduced a new function called PQresultErrorField() that can be used to get
SQLSTATE code from a query, which is far more useful than the error string returned from
pg_result_error().
http://www.postgresql.org/docs/7.4/static/libpq-exec.html
http://www.postgresql.org/docs/7.4/static/errcodes-appendix.html
Here's a patch that adds the pg_result_error_field() function to PHP:
http://collapsed.net/patches/php-4.3.5RC3-pg_result_error_field.diff
(To apply the patch cd into your php-4.3.5RC directory and type: patch -p1
</path/to/php-4.3.5RC3-pg_result_error_field.diff)
Example code:
<?php
if(!($db = pg_connect("user=foo password=bar dbname=foobar")))
die("pg_connect");
if(!pg_send_query($db, "SELECT foo FROM bar"))
die("pg_send_query");
if(!($result = pg_get_result($db)))
die("pg_get_result");
echo(pg_result_error($result) . "<br />\n");
/* only available if you have patched php */
if(function_exists("pg_result_error_field"))
{
$fieldcode = array(
"PGSQL_DIAG_SEVERITY", "PGSQL_DIAG_SQLSTATE",
"PGSQL_DIAG_MESSAGE_PRIMARY", "PGSQL_DIAG_MESSAGE_DETAIL",
"PGSQL_DIAG_MESSAGE_HINT", "PGSQL_DIAG_STATEMENT_POSITION",
"PGSQL_DIAG_CONTEXT", "PGSQL_DIAG_SOURCE_FILE",
"PGSQL_DIAG_SOURCE_LINE", "PGSQL_DIAG_SOURCE_FUNCTION");
foreach($fieldcode as $fcode)
{
printf("%s: %s<br />\n",
$fcode,
pg_result_error_field($result, constant($fcode)));
}
pg_free_result($result);
}
?>
<?php pg_result_error_field($result, PGSQL_DIAG_SQLSTATE); ?>
Returns the SQLSTATE code.
----
Manual Page -- http://www.php.net/manual/en/function.pg-result-error.php
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