php - How do I push key/value to array -

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i have data trying push array (key/value)

my code below when try , print array, empty.

what missing?

$dataarray = array(); foreach($datatypes $data)  {     $dataarray[$data->dataid] .= $data->type; } print_r($dataarray);

edit

this $datatypes looks like.

    simplexmlelement object (     [dataid] => 1     [type] => account number     [description] => user account number     [whoadded] => carl     [whenadded] => 2014-05-14t00:00:00 )

solution due being xml, had cast vars int , string

$dataarray[(int)$data->dataid] = (string)$data->type;

try with:

$dataarray = array(); foreach($datatypes $data)  { $dataarray[$data->dataid] = $data->type; } print_r($dataarray);

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