I installed this and noticed that it added a few spaces before the php code. To fix this I changed the php replacement code to this:
Code:
<div class="bbcphp"><div class="bbcphptitle">$vbphrase[php_code]:</div><pre style="margin:0px; padding:$stylevar[cellpadding]px; width:$stylevar[codeblockwidth]; overflow:auto"><div dir="ltr"><code style="white-space:nowrap"><!-- php buffer start -->$code<!-- php buffer end --></code>