p>To add data to your calendar cells involves creating an associative
array in which the keys correspond to the days you wish to populate and
the array value contains the data. The array is passed to the third
parameter of the calendar generating function. Consider this example:</p>
<div class="highlight-ci"><div class="highlight"><pre><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">library</span><span class="p">(</span><span 