Converting ColdFusion CFIF to PHP IF statement

Well I've change it now so I am not getting that error but now I do not have an IF statement. I have this...

Congratulations!!! Your Volume Discount Savings is... </span> <span class="style91">$</span><?php echo $GCcart->DisplayInfo("TotalDiscount"); ?><br />
</p>
<p><span class="style52 style64 style58"><strong><span class="style78">BUY MORE and SAVE</span><br />
<span class="style75"><span class="style76 style54">Increase your Quantity Now to 50 Cards and Pay Only</span> <span class="style91">$1.38 each </span><span class="style76 style54">!</span><br />
<span class="style76 style54">or get 100 Cards for Only</span> </span><span class="style91">$1.17 each </span><span class="style54 style76"><em>!</em></span></strong><br />
<span class="style33 style114">Discounts apply to same card purchases only. </span><br />
<span class="style81">(Change quantity and click on the &quot;Update Cart&quot; button)</span></span>



What I want it to say is........

IF TotalDiscount is > 0

Then....

Congratulations!!! Your Volume Discount <strong>Savings</strong> is... </span></span> <span class="style91">$</span><?php echo $GCcart->DisplayInfo("TotalDiscount"); ?><br />



If TotalDiscount is == 0

Then.....

<p><span class="style52 style64 style58"><strong><span class="style78">BUY MORE and SAVE</span><br />
<span class="style75"><span class="style76 style54">Increase your Quantity Now to 50 Cards and Pay Only</span> <span class="style91">$1.38 each </span><span class="style76 style54">!</span><br />
<span class="style76 style54">or get 100 Cards for Only</span> </span><span class="style91">$1.17 each </span><span class="style54 style76"><em>!</em></span></strong><br />
<span class="style33 style114">Discounts apply to same card purchases only. </span><br />
<span class="style81">(Change quantity and click on the &quot;Update Cart&quot; button)</span></span>