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Bug #76548 pg_fetch_result did not fetch the next row
Submitted: 2018-06-29 14:41 UTC Modified: -
From: sukei13 at gmail dot com Assigned:
Status: Closed Package: PostgreSQL related
PHP Version: Irrelevant OS:
Private report: No CVE-ID: None
 [2018-06-29 14:41 UTC] sukei13 at gmail dot com
Description:
------------
pg_fetch_result used in its short form: pg_fetch_result(resource $result, mixed $field). should fetch the next row each time it's called according to the documentation and the behavior of the other pg_fetch_* behavior.

in php-src, the pg_result->row internal counter is never incremented. This result in fetching the same row endlessly.

https://github.com/php/php-src/blob/php5_5_0/ext/pgsql/pgsql.c#L1182:L1188

Test script:
---------------
<?php

$connection = pg_connect('...');

$result = pg_query($connection, 'SELECT v FROM (VALUES (1), (2), (3)) AS t(v)'):

// cause an infinite loop since the pg_fetch_result func fetch the first value endlessly.
while ($value = pg_fetch_result($result, 0)) {
  var_dump($value); // should be 1, 2 then 3.
}

Expected result:
----------------
1, 2, 3

Actual result:
--------------
1, 1, 1, 1, 1, ...

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History

AllCommentsChangesGit/SVN commitsRelated reports
 [2018-06-29 16:36 UTC] ab@php.net
Automatic comment on behalf of ab
Revision: http://git.php.net/?p=php-src.git;a=commit;h=cb97fd309790330bced04091fac46ea1466283c9
Log: Fixed bug #76548 pg_fetch_result did not fetch the next row
 [2018-06-29 16:36 UTC] ab@php.net
-Status: Open +Status: Closed
 
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