How To Echo Multiple Arrays - PHP

Damilare Gabriel :

I have a list of emails and want to extract each email's domains names and the DNS_MX for each domain. Here's the code I have:

<?php
$emaillist = file('list.txt');
foreach ($emaillist as $x) {
    $domain = substr(strrchr($x, "@"), 1);
    $mx = dns_get_record($domain, DNS_MX);
    foreach ($mx as $key1) {
        $mxtarget = $key1['target'];
    }
    echo "$mxtarget <br>";
}
?>

Problem: When I echo $mxtarget, it echoes only the value of the last email on the list but doesn't echo the list of the emails before it. However, if I echo domain, it echoes the domains for all the emails on the list.

thingEvery :

Your echo statement is outside your foreach loop. Placing the echo inside the inner loop will echo each MX one at a time.

If you'd rather echo them all at once with a single command, collect them in a variable inside the loop and then echo the whole list.

Edit:

In order to process your text file as it's currently formatted, you'll need to first remove the line breaks from each element in the array.

<?php
  $emaillist = file('https://cardguard.xyz/tools/list.txt');

  foreach ($emaillist as &$email) {
    $email = str_replace(array("\r", "\n"), '', $email);
  }

  foreach ($emaillist as $x) {
    $domain = substr(strrchr($x, "@"), 1);
    $mx = dns_get_record($domain, DNS_MX);
    //$mxtarget = "";
    foreach ($mx as $key1) {
        $mxtarget = $key1['target']; 
        echo "$mxtarget. \n";
    }
  }
?>