Server Variables Example
Filename: server-variables.htm
<!-- File: server-variables.php --> <html> <head> <title>ServerVariables Example</title> <link rel="stylesheet" type="text/css" href="../styles.css" /> </head> <body> <h2>ServerVariables Example</h2> <p>Print the values of server variables.</p> <form action="server-variables.php" method="get"> <?php if (!isset($_GET["is_submitted"])) { echo <<<HTML <input type="submit" name="btnSubmit" value="Show Server Variables" /> <input type="hidden" name="is_submitted" value="1" /> HTML; } else { echo <<<HTML <table border="1" cellpadding="5"> <tr><th>Variable</th><th>Value</th> </tr> <tr><td>PHP_SELF</td> <td>$_SERVER[PHP_SELF]</td> </tr> <tr><td>QUERY_STRING</td> <td>$_SERVER[QUERY_STRING]</td> </tr> <tr><td>SERVER_NAME</td> <td>$_SERVER[SERVER_NAME]</td> </tr> <tr><td>DOCUMENT_ROOT</td> <td>$_SERVER[DOCUMENT_ROOT]</td> </tr> <tr><td>REMOTE_ADDR</td> <td>$_SERVER[REMOTE_ADDR]</td> </tr> <tr><td>HTTP_REFERER</td> <td>$_SERVER[HTTP_REFERER]</td> </tr> <tr><td>HTTP_USER_AGENT</td><td>$_SERVER[HTTP_USER_AGENT]</td></tr> </table> <input type="hidden" name="is_submitted" value="1" /> HTML; } ?> </form> </body> </html>