Am I mad or....

niclarke

is something else wrong?

I'm reading some users from a file and then comparing one at a time in a for loop with a session var. BUT it seems only to work if there is a) one value in the file b) the correct hit is the last one in the list.

Any ideas?

$lines = file("users/userlist.txt");

foreach ($lines as $line_num => $line) {
print $SESSION['userid'] ."<br>";
print $line . "<BR>";
if ($SESSION['userid'] == $line){
echo "allowed<br>";
}
else {
echo "not allowed<br>";
}
}

In the file (Session ID NC):

allowed

NC
IR
NC

Not allowed

NC
IR

LordShryku

Using file() keeps the line breaks intact, so you need to trim those off before comparing. Also, this metod seems completely un-needed, since you could just use [man]in_array[/man]

niclarke

Thanks for your help, you hit the nail on the head + now I know about the in_array function.

Below is the code that I used, just in case other people run into the same problem:

Case-insensitive version of in_array

function is_in_array($str, $array) {
return preg_grep('/^' . preg_quote($str, '/') . '$/i', $array);
}

function check_user($file_ext){

Open the file for reading

$lines = file("users/userlist.txt");

# Remove the line breaks
foreach ($lines as $key=>$value) { $lines[$key]=trim($value); }

# Test to see if the userid is in the lines array
if (is_in_array($_SESSION["userid"], $lines)){
	echo "allowed";
}
else{
	echo "Not allowed";
}

}

Regards,
Nick