<!-- This part is just plain HTML. --> <html><head><title>PHP Variables</title></head> <body style="background-color: #EFEFFF;"> <img src="http://sandbox.mc.edu/~bennet/icons/bibart.gif" style="height: 3px; width: 100%; "> <img src="http://sandbox.mc.edu/~bennet/icons/msplash3.gif" style="float: right;"> <div style="color: #050b82; padding-top: 10px;"> <span style="font-size: 180%; font-weight: bold; ">PHP Variables</span> <div style="padding-top: 5pt;"><a href="../index.html"><img src="http://sandbox.mc.edu/~bennet/icons/up3.gif" style="border: 0pt; padding-right: 5pt; padding-left: 15pt; vertical-align: middle;"><i>PHP Code Examples</i></a></div> </div> <img src="http://sandbox.mc.edu/~bennet/icons/bibar.gif" style="height: 3px; width: 100%; margin-bottom: 10pt; clear: right; "> <?php // PHP variables always start with $. (Unlike perl, all variables start with // $, including aggregates.) $fred = 17; $barney = 3 + $fred; $alice = "Do you know the way to San Jose?"; echo $fred, " ", $barney, " ", $alice ?> <p><hr><br> Turn left at Albuquerque. <br><hr><p> <script language="php"> // This is another wayt to enter PHP. And variable values survive between // PHP regions. echo '$barney has the value ', $barney, ".<br>"; </script> <i>This is plain HTML.</i> <p><table> <?php // There are many pre-defined variables which describe the script's // environment. echo "<tr><td><b>My URL is:</b>:</td><td>http://", $_SERVER["SERVER_NAME"], ":", $_SERVER["SCRIPT_NAME"], "</td></tr>"; echo "<tr><td><b>Your browser is</b>:</td><td>", $_SERVER["HTTP_USER_AGENT"], "</td></tr>"; echo "<tr><td><b>Your IP address is</b>:</td><td>", $_SERVER["REMOTE_ADDR"], "</td></tr>"; ?> </table></p> </body> </html>