title: PHP post checkbox problem
body: <p>i have a form that utilizes checkboxes.      </p>
  
  <blockquote>
    <p><code>&lt;input  type="checkbox"  name="check[]"  value="notsure"&gt;  Not Sure, Please help me determine &lt;br /&gt;
                &lt;input type="checkbox" name="check[]" value="keyboard"&gt; Keyboard &lt;br /&gt;
                &lt;input type="checkbox" name="check[]" value="touchscreen"&gt; Touch Screen Monitors &lt;br /&gt;
                &lt;input  type="checkbox"  name="check[]"  value="scales"&gt;Scales &lt;br /&gt;
                &lt;input  type="checkbox"  name="check[]"  value="wireless"&gt;Wireless Devices &lt;br /&gt;</code></p>
  </blockquote>
  
  <p>And here is the code that process this form in a external php file.</p>
  
  <pre><code>$addequip = implode(', ', $_POST['check']);
  </code></pre>
  
  <p>I keep getting this error below;</p>
  
  <p><br /></p>
  
  <pre><code>&lt;b&gt;Warning&lt;/b&gt;:  implode() [&lt;a href='function.implode'&gt;function.implode&lt;/a&gt;]: Invalid arguments passed in &lt;b&gt;.../process.php&lt;/b&gt; on line &lt;b&gt;53&lt;/b&gt;&lt;br /&gt;
  OK
  </code></pre>