php - make a single dimensional array multidimensional

I have a function that loops through an array and runs database operations within each loop.

function myfunc($array) {
    foreach($array as $a) {
        // db operations here
        echo $a["one"].'<br />';
        echo $a["two"].'<br />';
    }
}
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but then sometimes, I have a single-dimensional array such as

$x = array(
    'one' => '1',
    'two' => '2'
);
myfunc($x);
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however, it's falling to loop because there is nothing to loop over.

I get errors saying:

Warning: Illegal string offset 'one'
Warning: Illegal string offset 'two'
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i know I could make the single dimensional array$x[] but that would mean I have to reset it to empty each time ($x = array();) - which isn't a problem but if it;s possible to loop over a single dimensional array, i'd rather do that

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