types.comparisons.html

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   <colgroup>

    <thead valign="middle">
     <tr valign="middle">
      <th colspan="1"> </th>
      <th colspan="1"><b><tt>TRUE</tt></b></th>
      <th colspan="1"><b><tt>FALSE</tt></b></th>
      <th colspan="1"><i>1</i></th>
      <th colspan="1"><i>0</i></th>
      <th colspan="1"><i>-1</i></th>
      <th colspan="1"><i>&quot;1&quot;</i></th>
      <th colspan="1"><i>&quot;0&quot;</i></th>
      <th colspan="1"><i>&quot;-1&quot;</i></th>
      <th colspan="1"><b><tt>NULL</tt></b></th>
      <th colspan="1"><i>array()</i></th>
      <th colspan="1"><i>&quot;php&quot;</i></th>
      <th colspan="1"><i>&quot;&quot;</i></th>
     </tr>

    </thead>

    <tbody valign="middle" class="tbody">
     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><i>1</i></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><i>0</i></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><i>-1</i></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><i>&quot;1&quot;</i></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><i>&quot;0&quot;</i></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><i>&quot;-1&quot;</i></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>NULL</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><i>array()</i></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><i>&quot;php&quot;</i></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><i>&quot;&quot;</i></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>FALSE</tt></b></td>
      <td colspan="1" rowspan="1" align="left"><b><tt>TRUE</tt></b></td>
     </tr>

    </tbody>
   </colgroup>

  </table>

 </p>

 <p class="para">
  <table border="5">
   <caption><b>Strict comparisons with <i>===</i></b></caption>
   <colgroup>

    <thead valign="middle">