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exec($cmd,$str,$result);
echo "result = $result <br/>";
if ($result != 0) {
    echo "failed";
}
print_r($str);
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$output = shell_exec("/usr/bin/sudo /usr/bin/whoami 2>&1);
echo "output = $output";
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$query = $this->db->query('SELECT name, title, email from my_table');
foreach ($query->result() as $row)
{
echo $row->title;
echo $row->name;
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