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<h2>The $_GET Variable</h2>
<p>The $_GET variable is an array of variable names and values sent by the HTTP GET 
method.</p>
<p>The $_GET variable is used to collect values from a form with method=&quot;get&quot;. 
Information sent from a form with the GET method is visible to everyone (it will 
be displayed in the browser's address bar) and it has limits on the amount of 
information to send (max. 100 characters).</p>
<h3>Example</h3>
<table class="ex" cellspacing="0" width="100%" border="1" id="table22">
  <tr>
    <td>
    <pre>&lt;form action=&quot;welcome.php&quot; method=&quot;get&quot;&gt;
Name: &lt;input type=&quot;text&quot; name=&quot;name&quot; /&gt;
Age: &lt;input type=&quot;text&quot; name=&quot;age&quot; /&gt;
&lt;input type=&quot;submit&quot; /&gt;
&lt;/form&gt;</pre>
    </td>
  </tr>
</table>

<p>When the user clicks the &quot;Submit&quot; button, the URL sent could look something 
like this:</p>
<table class="ex" cellspacing="0" width="100%" border="1" id="table23">
  <tr>
    <td>
    <pre>http://www.w3schools.com/welcome.php?name=Peter&amp;age=37</pre>
    </td>
  </tr>
</table>
<p>The &quot;welcome.php&quot; file can now use the $_GET variable to catch the form data 
(notice that the names of the form fields will automatically be the ID keys in the $_GET array):</p>
<table class="ex" cellspacing="0" width="100%" border="1" id="table24">
  <tr>
    <td>
    <pre>Welcome &lt;?php echo $_GET[&quot;name&quot;]; ?&gt;.&lt;br /&gt;
You are &lt;?php echo $_GET[&quot;age&quot;]; ?&gt; years old!</pre>
    </td>
  </tr>
</table>
<br />
<hr />

<h2>Why use $_GET?</h2>
<p><b>Note:</b> When using the $_GET variable all variable names and values are displayed in the 
URL. So this method should not be used when sending passwords or other sensitive 
information! However, because the variables are displayed in the URL, it is possible to 
bookmark the page. This can be useful in some cases.</p>
<p><b>Note:</b> The HTTP GET method is not suitable on large variable values; 
the value cannot exceed 100 characters.</p>
<hr />

<h2>The $_REQUEST Variable</h2>
<p>The PHP $_REQUEST variable contains the contents of both $_GET, $_POST, and $_COOKIE.</p>
<p>The PHP $_REQUEST variable can be used to get the result from form data sent 
with both the GET and POST methods.</p>

<h3>Example</h3>
<table class="ex" cellspacing="0" width="100%" border="1" id="table25">
  <tr>
    <td>
    <pre>Welcome &lt;?php echo $_REQUEST[&quot;name&quot;]; ?&gt;.&lt;br /&gt;
You are &lt;?php echo $_REQUEST[&quot;age&quot;]; ?&gt; years old!</pre>
    </td>
  </tr>
</table>
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