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<?php
$args = array('first_name'=>'Bill','last_name'=>'Buzzard');
$values[] = array('first_name'=>'Brenda','last_name'=>'Buzzard');
$values[] = array('first_name'=>'Victor','last_name'=>'Vulture');
$values[] = array('first_name'=>'Bill','last_name'=>'Blue Jay');
$values[] = array('first_name'=>'Bill','last_name'=>'Buzzard');

$result = search_for($values,$args);
var_dump($result);exit;

function search_for($array,$args) {
    $results = array();
    foreach ($array as $row) {
        $found = false;
        $hits = array();
        foreach ($row as $k => $v) {
            if (array_key_exists($k,$args)) $hits[$k] = ($args[$k] == $v);
        }

        $found = array_product($hits);
        if (!in_array($row,$results) && true == $found) $results[] = $row;
    }

    return $results;
}
?>