preg_match TXT

[oneg]

I have this code for referer redirect:

<?
$referrer = $_SERVER['HTTP_REFERER'];
if (preg_match("/outsidesite.com/",$referrer)) {
header('Location: http://www.mysite1.com');
}
else {
header('Location: http://www.mysite.com');
};
?>

But the question is:
If I want to match a LIST OF SITES stored on a txt file, insted of "outsidesite.com".
How can I work with a txt list of sites: "mysites.txt"
instead of only one site: "outsidesite.com"

<?
$referrer = $_SERVER['HTTP_REFERER'];
if (preg_match("HERE A TXT WITH A LIST OF SITES mysites.txt",$referrer)) {
header('Location: http://www.mysite1.com');
}
else {
header('Location: ht*tp://www.mysite.com');
};
?>

Anyone knows what to put here: ("HERE A TXT WITH A LIST OF SITES mysites.txt"), to make it functional.

I am working with this:

$file=file_get_contents("file.txt");

if (preg_match ("/$file/", ...........

But it only retrives the first line in the txt file, not the second line.

thank you.

[laserlight]

You could do something like this:

<?php

function isListedSite($site, $list) {
    foreach ($list as $listed_site) {
        if (stripos($site, rtrim($listed_site)) !== false) {
            return true;
        }
    }
    return false;
}

if (isset($_SERVER['HTTP_REFERER'])
        && isListedSite($_SERVER['HTTP_REFERER'], file('mysites.txt'))) {
    header('Location: http://www.mysite1.com');
} else {
    header('Location: http://www.mysite.com');
}
exit;

?>

[oneg]

laserlight wrote:

You could do something like this:

<?php

function isListedSite($site, $list) {
    foreach ($list as $listed_site) {
        if (stripos($site, rtrim($listed_site)) !== false) {
            return true;
        }
    }
    return false;
}

if (isset($_SERVER['HTTP_REFERER'])
        && isListedSite($_SERVER['HTTP_REFERER'], file('mysites.txt'))) {
    header('Location: http://www.mysite1.com');
} else {
    header('Location: http://www.mysite.com');
}
exit;

?>

Thank you for your answer,
I will test this code.