Bug #72058 [Com]: pg_field_num Error with Quoted Aliases

From: Date: Wed, 04 Mar 2020 12:24:38 +0000
Subject: Bug #72058 [Com]: pg_field_num Error with Quoted Aliases
References: 1  Groups: php.bugs 
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Edit report at https://bugs.php.net/bug.php?id=72058&edit=1

 ID:                 72058
 Comment by:         tobias dot john at foo dot ag
 Reported by:        klaxian at gmail dot com
 Summary:            pg_field_num Error with Quoted Aliases
 Status:             Open
 Type:               Bug
 Package:            PostgreSQL related
 Operating System:   Debian Linux
 PHP Version:        5.5.34
 Block user comment: N
 Private report:     N

 New Comment:

This ist still present in PHP 7.4.1.


Previous Comments:
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[2020-03-03 11:53:47] marcel at wieland dot koeln

Same with pg_fetch_result().

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[2016-04-19 12:56:19] klaxian at gmail dot com

Description:
------------
When selecting data from a PostgreSQL database using quoted aliases for column names (to preserve
case, for example), pg_field_num() seems to expect its input to also contain double quotes. 
However, returned values from functions like pg_field_name() and pg_fetch_assoc() do not contain
double quotes.  PostgreSQL's own client also does not include double quotes in the resulting
column names.  Even if the behavior of pg_field_num is intentional, there does not seem to be a way
to determine if field aliases have been quoted using the result resource only.

I suggest fixing pg_field_num() so that it is consistent with the other PostgreSQL functions.  I
would expect the function to accept the actual field name, not encapsulated in double quotes.

Test script:
---------------
$result = pg_query('SELECT \'test\' AS "TeSt"');
var_dump(pg_field_name($result, 0)); // returns TeSt
var_dump(pg_field_num($result, 'TeSt')); // returns -1 (error)
var_dump(pg_field_num($result, '"TeSt"')); // returns 0 (first column)


Expected result:
----------------
I expect pg_field_num($result, 'TeSt') to return 0 instead of an error.

Actual result:
--------------
-1


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Edit this bug report at https://bugs.php.net/bug.php?id=72058&edit=1


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