php-doc-en/faq/html.xml

<?xml encoding="iso-8859-1"?>
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 <chapter id="faq.html">
  <title>PHP and HTML</title>
  <titleabbrev>PHP and HTML</titleabbrev>

  <para>
   PHP and HTML interact a lot : PHP generate HTML, and HTML
   has informations that will be sent to PHP.
  </para>

  <qandaset>
   <qandaentry id="faq.html.arrays">
    <question>
     <para>How do I create arrays in a HTML &lt;form&gt;?</para>
    </question>
    <answer>
     <para>
      To get your &lt;form&gt; result sent as an array to your PHP script
      you name the &lt;input&gt;, &lt;select&gt; or &lt;textarea&gt;
      elements like this:
      <programlisting>
<![CDATA[
<input name="MyArray[]">
<input name="MyArray[]">
<input name="MyArray[]">
<input name="MyArray[]">
]]>
      </programlisting>
      Notice the square brackets after the variable name, that's what
      makes it an array. You can group the elements into different arrays
      by assigning the same name to different elements:
      <programlisting>
<![CDATA[
<input name="MyArray[]">
<input name="MyArray[]">
<input name="MyOtherArray[]">
<input name="MyOtherArray[]">
]]>
      </programlisting>
      This produces two arrays, MyArray and MyOtherArray, that gets sent
      to the PHP script.
      </para>
      <para>
       <note>
        <para>
         You need not use indices with arrays in HTML, although you can
         specify number or associative indices, so you can exactly specify
         what indices will contain the information provided by that
         input element. If you do not specify indices, the array gets
         filled in the order the elements appear in the form.
        </para>
       </note>
      </para>
      <para>
      For functions you can use to process these arrays once you get
      them into your scripts, please see the
      <link linkend="ref.array">Arrays section</link>.
     </para>
    </answer>
   </qandaentry>

  </qandaset>
 </chapter>

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