PHP Array Undefined Index Issue

Question

I am creating a sitemap using XML. When I try to put multiple values to array, I am getting undefined index for the second variable.

Sample code below.

How I gather the results:

$tempArray = array();
switch ($type)
    {
case "v":
    $dbResult = $db->get_dbResult("Select title,id,vdate from " . DB_PREFIX . "tpV order by id desc " . this_offset($getFirstK));
    if ($dbResult)
        {
        foreach($dbResult as $pResult)
            {
            $tempArray[]['loc']   = convert_to_URL($pResult->id, $pResult->title);
            $tempArray[]['vdate'] = $pResult->vdate;
            }
        }

    break;

How I print the result.

array_filter($tempArray = array_map("unserialize", array_unique(array_map("serialize", $tempArray))));
echo '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">';

foreach($tempArray as $tVars)
    {
    echo '<url>
<loc>
'.$tVars["loc"].'
</loc>
<lastmod>'.$tVars["vdate"].'</lastmod>
<changefreq>weekly</changefreq>
</url>';
    }
echo '</urlset>';

I am getting undefined index error for $tempArray[]['vdate']. Is there anything am I missing?

Try to var_dump your $tempArray before the foreach just to make sure you're having everything right. — Phiter
– Phiter, Commented Nov 28, 2016 at 10:13

LF-DevJourney · Accepted Answer · 2016-11-28 10:19:33Z

1

$tempArray[]['loc']   = convert_to_URL($pResult->id, $pResult->title);
$tempArray[]['vdate'] = $pResult->vdate;

here you create two arrays, one with loc key, another with vdate, so one of the two keys must be undefined in the two arrys.

to fix this error, just change the two lines to

$tempArray[] = array('loc' => convert_to_URL($pResult->id, $pResult->title), 'vdate' => $pResult->vdate);

here is a demo

<?php
  $array=array();
  $array[]['a'] = 'a';
  $array[]['b'] = 'b';
  echo json_encode($array);

result:[{"a":"a"},{"b":"b"}]

edited Nov 28, 2016 at 10:19

answered Nov 28, 2016 at 10:13

LF-DevJourney

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1 Comment

Lunatic Fnatic Over a year ago

Oh, I see now, thank you for the clarification. Overthinking may cause embarrassment just as I had ^^

Bharat Dangar · Accepted Answer · 2016-11-28 10:21:10Z

0

You can set Key.

$i = 0;
foreach($dbResult as $pResult)
{
            $tempArray[$i]['loc']   = convert_to_URL($pResult->id, $pResult->title);
            $tempArray[$i]['vdate'] = $pResult->vdate;
$i++;
}

answered Nov 28, 2016 at 10:21

Bharat Dangar

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