PHP Redirection

[mythsmx]

Hi, please please help with this PHP code. Essentially, this PHP page will be stored on Server1. It will function as a redirect to another server. ServerA is the Primary, while ServerB is the secondary. If the Primary fails, the PHP page should redirect the access to ServerB url.

 

I tried this and the redirection works only for the Primary. I also tried several attempts to put an invalid host for the Primary, but it seems like the ELSE condition does not work. Please help me how to fix this. Thank you very much.

 

 

<?php

$Pri = "http://www.yahoo.com";

$Sec = "http://www.google.com";

 

//check for port number, default is 80

$link = $_GET['link'].":";

$s_link = str_replace("::", ":", $link);

list($addr,$port)= explode (':',"$s_link");

if (empty($port)){

$port = 80;

}

//Test the server connection

$churl = @fsockopen(server($addr), $port, $errno, $errstr, 20);

if (!$churl){

//echo $errstr;

header("Location: $Pri");

}

else {

header("Location: $Sec");

}

function server($addr){

if(strstr($addr,"/")){$addr = substr($addr, 0, strpos($addr, "/"));}

return $addr;

}

?>

[raytri]

Try moving the server() function up, so it's above the function call. PHP has to know about the function before it can call it.

[premiso]

PHP has to know about the function before it can call it.

 

Ummm no it doesn't. You can define a function anywhere on the page and PHP can call that function just fine anywhere on the page. Functions are put into memory before the script is ran.

[raytri]

Doh. Getting my PHP and Javascript mixed up.