SunshinePHP Developer Conference 2015

pg_result_error

(PHP 4 >= 4.2.0, PHP 5)

pg_result_error Zwraca błąd związany z identyfikatorem wyniku

Opis

string pg_result_error ( resource $result )

pg_result_error() zwraca komunikat błędu związany z identyfikatorem wyniku result. Dzięki temu użytkownik ma większą szanse aby otrzymać właściwy komunikat niż przy użyciu pg_last_error().

Zobacz także pg_query(), pg_send_query(), pg_get_result(), pg_last_error() i pg_last_notice()

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User Contributed Notes 3 notes

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1
spamuser at test dot com
3 years ago
pg_result_error does NOT work with prepared statements.
up
0
axon dot wp at wp dot pl
8 years ago
You can  use pg_set_error_verbosity() to retrieve SQLSTATUS from pg_last_error().
up
0
Anonymous
10 years ago
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.
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