I had been wondering how sites sprinkle ads in irregular parts of their index page. As it turns out, it's just a matter of a simple if statement I put at the end of my Drupal node.tpl.php template file.

&nbsp; <span style="color: #000000"><span style="color: #0000BB">&lt;?php </span><span style="color: #007700">if (!</span><span style="color: #0000BB">$page </span><span style="color: #007700">&amp;&amp; (</span><span style="color: #0000BB">$seqid </span><span style="color: #007700">== </span><span style="color: #0000BB">2 </span><span style="color: #007700">|| </span><span style="color: #0000BB">$seqid </span><span style="color: #007700">== </span><span style="color: #0000BB">6</span><span style="color: #007700">) &amp;&amp; !</span><span style="color: #0000BB">preg_match</span><span style="color: #007700">(</span><span style="color: #DD0000">"/^(132.170|68.2[0-2]{1}\d{1}|24.\d{2,3}|70.243|204.210|209.86).\d{1,3}.\d{1,3}$/"</span><span style="color: #007700">, </span><span style="color: #0000BB">$_SERVER</span><span style="color: #007700">[</span><span style="color: #DD0000">'REMOTE_ADDR'</span><span style="color: #007700">])): </span><span style="color: #0000BB">?&gt;</span></span><br>&nbsp; &lt;div class="node_ad"&gt;&lt;!--ad code here--&gt;&lt;/div&gt;<br>&nbsp; <span style="color: #000000"><span style="color: #0000BB">&lt;?php </span><span style="color: #007700">endif; </span><span style="color: #0000BB">?&gt;</span></span>

What does the preg_match do you ask? I don't think professors at school should see the ads on my site, since I do occasionally post assignments on my own site in addition to or instead of WebCT. The regex doesn't show the ads to the ucf.edu netblock or major local ISP address blocks.

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