<form action="test1.php" method="post">
<select name="selCategory[]" id="selCategory" multiple="multiple">
<option value="0">--Select--</option>
<option>A Test</option>
<option>B</option>
<option>C</option>
<option>D</option>
</select>
<input type="submit" value="Submit" name="btnSubmit" />
</form>

<?php
if($_REQUEST["btnSubmit"]!="") {
for($intI=0;$intI<=count($_REQUEST["selCategory"]);$intI++) {
echo str_replace(" ","<br />",$_REQUEST["selCategory"][$intI])."<br />";
}
}
?>

Hi,
Like this you want.

<form action="test1.php" method="post">
<select name="selCategory[]" id="selCategory" multiple="multiple">
<option value="0">--Select--</option>
<option>A</option>
<option>B</option>
<option>C</option>
<option>D</option>
</select>
<input type="submit" value="Submit" name="btnSubmit" />
</form>

<?php
if($_REQUEST["btnSubmit"]!="") {
for($intI=0;$intI<=count($_REQUEST["selCategory"]);$intI++) {
echo $_REQUEST["selCategory"][$intI]."<br />";
}
}
?>