ltiple words, needs underscore separator</span>
<span class="nv">$name_of_last_city_used</span> <span class="c1">// too long</span>
</pre></div>
</div>
<p><strong>CORRECT</strong>:</p>
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">for</span> <span class="p">(</span><span class="nv">$j</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nv">$j</span> <span class="o">&lt;</span> <span class="mi">10</span><span class="p">;</span> <