Secure or not secure URL PHP check

Question

I'll try to make a script if the user is redirected to

http://example.com/?url=http://badsite.com

that the script reacts at the URL and displays an echo saying "Not secure", just like the Twitter and Google system, they also check if the URL is harmful.

I've found something, but this isn't what I was seaching for. Google couldn't help me, it gave me all vague answers.

<?php
$badsite = "http://badsite.com";
$host = $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI'];

if($host == $badsite) {
    echo "Secure, redirecting you";
} else {
    echo "NOT SECURE";
}
?>

It isn't working as it should, it always displays "Not secure", while the link is secure. I think there's a error somewhere, but I need help fining it.

EDIT

<?php
$badsite = "http://badsite.com";
$host = $_GET['url'];

if($host == $badsite) {
    echo "Secure, redirecting you";
} else {
    echo "NOT SECURE";
}
?>

Ive tried, but it's still not working :(

Let me make the question a littlebit easier, how can I make it so if the url is

http://example.com/?url=Texthere

that there will be an echo on the page with "this is the page of texthere" and if "Texthere" isn't in the URL, that the echo won't be displayed?

@Rizier123 What's wrong with this script, and if someone has a better script, maybe can they link me to that page? — Carl Johnson
– Carl Johnson, Commented Feb 28, 2015 at 11:36
What's wrong with this script Nothing, what should be wrong? What do you want/need? — Rizier123
– Rizier123, Commented Feb 28, 2015 at 11:36
@Rizier123 It isn't working as it should, it always displays "Not secure", while the link is secure. I think there's a error somewhere, but I'm a starter so I don't know where — Carl Johnson
– Carl Johnson, Commented Feb 28, 2015 at 11:39

Eda190 · Accepted Answer · 2015-02-28 12:11:15Z

1

Change your $host variable and if statement like that:

$host = "http://". $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI'];

if($host != $badsite) {
echo "Secure, redirecting you";
}

This worked just fine for me (tested). You need to include http:// into your variable, and your if statement was wrong.

answered Feb 28, 2015 at 12:11

Eda190

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