Can someone help me to understand what this code does

usman19

// include the database utility file
include_once ('dbconnect.inc');

<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
<meta name="pragma" content="no-cache" />
<style type="text/css" media="all">@import "cart.css";</style>
<title>Cart example with PHP & MySql</title>
</head>

<body>
	<h3>Cart example with PHP &amp; MySql [ Product Select ]</h3>

	<!-- Show the catagory data as a option selector (always shown) -->
	<form method="post" id="range_form" action="<?php echo $_SERVER['PHP_SELF']; ?>">
		<p>select range:<br/>
			<select name="range" onChange="document.forms['range_form'].submit();">
			<?php
    			$result_range = mysql_query("SELECT * FROM catagory");
    			while ($row = mysql_fetch_assoc($result_range))
      			{
      				echo "<option value=\"".$row['c_id']."\"";
      				if (isset($_REQUEST['range']) && $_REQUEST['range']==$row['c_id'])
      				{
        				echo " selected=\"selected\"";
      				}
					echo ">";
      				echo $row['name']."</option>\n";
    			}
  			?>
			</select>
		</p>
	</form>

And what programming languages are used within this code?

laserlight

Please post code in php bbcode tags.

Can someone help me to understand what this code does

Probably, but what do you think?

And what programming languages are used within this code?

PHP, obviously, and possibly also Javascript due to the onChange attribute.

NogDog

The code only uses one programming language: PHP. It also uses HTML, which is not a programming language but is a text mark-up language.

Hopefully the actual code has a "<?php" tag at the beginning? (If not, the include statement at the start will not be processed as PHP code.)

As to what it does: it displays a form, with the options for the select element taken from a database query.