PHP : Handling multiple select menu

Thought of putting a code to illustrate handling multiple select menus with php.

Note the square brackets and the multiple="multiple" part in the form.

HTML form
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<form action="some_action_file.php" method="post">
<select name="select_name[]" multiple="multiple">
<option value="a">a</option>
<option value="b">b</option>
<option value="c">c</option>
<option value="d">d</option>
</select>
<input type="submit" value="Submit" />
</form>
PHP part
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<?php ## some_action_file.php foreach ($_POST['select_name'] as $select_name){ echo "$select_name<br />"; ## prints all the selected values; one per line } ?>