syntax - How to echo php variable from array? -

i need echo this:

echo "<a href="#">$some['variable']</a> 

how can escape [] brackets echo variable in link?

echo "<a href='#'>" . $some['variable'] . "</a>"; 

or

echo "<a href=\"#\">" . $some['variable'] . "</a>"; 

or

echo "<a href='#'>{$some['variable']}</a>";