PHP Read txt file and check if username password exists

Question

I have a bunch of passwords and usernames stored in a txt file and i need to check for matches. I know this is not a safe method but its for leaning purposes.

This code

Answer 1

Consider the possibility of having a space in the password so as any symbols. Perhaps you should split on a line break ("\n").

if( $result[$i] === $user && $result[$i+1] === $password )

The first part of the statement has to be true for the second one to be evaluated. The $i variable is never changed

$file = "username1 passwords1 username2 password2";
$result = explode(" ",$file);
$user = "username1";
$password = "passwords1";

for($i=0; $i< count($result); $i++){

    if($result[$i] === $user && $result[$i+1] === $password)
    {

        echo 'Password and Username Correct';
   }
}