ID: 48015
Updated by: [email protected]
Reported By: blackmagic at computer dot org
Status: Bogus
Bug Type: PostgreSQL related
Operating System: Centos 5.3
PHP Version: 5.2.9
New Comment:
Like already said above: By default the function returns all fields
twice. Once with numeric index and once with the field name as the
index.
Previous Comments:
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[2009-04-20 04:53:08] blackmagic at computer dot org
Changing pg_fetch_array() to:
$details = pg_fetch_array($db_result, $index, PGSQL_NUM);
produces correct results with the implode() and foreach() methods. But
it doesn't explain the behaviour I've been experiencing before including
the PGSQL_NUM parameter in the parameter list.
Clearly I was getting a result that wasn't the intended result, ie,
instead of getting values and column names I was getting repeated
values.
------------------------------------------------------------------------
[2009-04-20 04:22:12] blackmagic at computer dot org
I understand that the array contains the column names and the
corresponding key values.
The problem is I'm not getting back the column names and the key
values, I'm getting the key values twice.
I thought I would try something else:
foreach($details as $value) $result .= ($value . '|');
instead of $company[$index] = implode('|', $details);
The results are the same for the implode() method and the foreach()
method: The key values are doubled up in the result the script sends
back to the browser.
I've captured the result with a window.alert, but can't paste it into
this reply. I'm sending it to you as a separate e-mail with an Word
attachment.
Thanks for your assistance.
MJR
------------------------------------------------------------------------
[2009-04-20 01:39:12] [email protected]
Jani was trying to get you see to that pg_fetch_array has two entries
because it has both the numeric keys AND the column name.
It's quite clearly in the manual that this is the default behavior of
pg_fetch_array. There is a third parameter you can add to only return
numeric keys and therefore resulting in one set when you implode.
------------------------------------------------------------------------
[2009-04-19 23:13:25] blackmagic at computer dot org
The scripts in which this implode problem is occurring are remote
scripts which are called from a browser by AJAX. AJAX sends the result
of 'echo $details' back to the browser. If an error occurs during the
running of a script 'echo $details' will return an appropriate error
message. Debugging these scripts is more difficult than debugging PHP
code that's embedded in HTML code.
Since var_dump doesn't return any value I can't see how
var_dump($company) is going to help me with scripts of this type.
I tried 'echo "var_dump($company)"' and the answer was 'var_dump
Array'.
This script snippet works:
for ($index=0; $index<$db_rows; $index++) {
$details = pg_fetch_array($db_result, $index);
$company[$index] = $details[0] . '|' . $details[1] . '|' .
$details[2];
}
$details = implode('^', $company);
echo "$details";
'echo "$details"' returns "1|2|3".
This script snippet doesn't work:
for ($index=0; $index<$db_rows; $index++) {
$details = pg_fetch_array($db_result, $index);
$company[$index] = implode('|', $details);
}
$details = implode('^', $company);
echo "$details";
'echo "$details"' returns "1|1|2|2|3|3".
The only difference between the two scripts is the third line, where
the array returned by pg_fetch_array() is imploded in the script that
doesn't work. This suggests to me that there's something unusual about
arrays returned by pg_fetch_array(), ie, they are treated differently by
implode().
------------------------------------------------------------------------
[2009-04-19 14:18:56] [email protected]
Try 'var_dump($company);' and it should be clear..
------------------------------------------------------------------------
The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at
http://bugs.php.net/48015
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