How to change place of text in echo?

Question

I'm setting up a script for a friend, I want the landing_{random} to be added after the domain names but I whatever I do it shows behind the URL. How can I fix this issue?

I have tried moving the variables around and reversing places with the variables.

<?php
    $lines = file('domains.txt');
    foreach($lines as $line) {
        $randomString = substr(str_shuffle("0123456789abcdef"), 0, 1) . 
        substr(str_shuffle("0123456789abcdef"), 0, 6);
        $landing = "/landing_$randomString";
        /*echo "$line.'/landing_'.$randomString";*/
        echo "$line{$landing}";
    }
?>

I want when I input URL in http://example.com in domains.txt for it to output http://example.com/landing_d2ae5b3

Answer 1

It will not work like that Try instead:

$landing = '/landing_".$randomString."';

Should work fine now

Update answer

Try this

$landing = "/landing_".$randomString."";

By the way I think you may need to define array before use it like

$lines = explode("" ,$lines);

//then
$landing = "/landing_".$randomString."";

Also you may use this :

echo "$line".$landing."";