Lookup in CSV file is failing - php

Question

I have a form where the user enters their first and last names. I want to check if their full name is present in my CSV file, which I use to store all current members / users of my form. The format in which data is stored is firstname,lastname. And if they are present, I want to print out You are already a member.
But that is not what I see in output, when I run my code. It doesn't output that, even if I input names which are present in the CSV file.
Here is my source code:
$JLMembers = Array();
// Open the file of Members
if ($handle = fopen("JLMembers.csv", "r")) {
// Get the next CSV line
while ($data = fgetcsv($handle, 1000, ",")) {
// Add that line to the array
array_push($JLMembers, $data);
}
}
foreach($JLMembers as $JLMember) {
$FirstName = $_GET['FirstName'];
$CurrentMemberFirstName = $JLMembers[0];
if ($FirstName === $CurrentMemberFirstName) {
foreach($JLMembers as $JLMember) {
$SecondName = $_GET['LastName'];
$CurrentMemberSecondName = $JLMembers[1];
if ($SecondName === $CurrentMemberSecondName) {
print "<br>You are already a member<br>";
}
}
}
}

Answer 1

You're using $JLMembers[0], which contains the first row of the CSV, when you should be using $JLMember[0], which contains the first column of the current row in the foreach loop. And you don't need two loops, just compare both columns in one loop.
The code should be:
$FirstName = $_GET['FirstName'];
$LastName = $_GET['LastName'];
foreach ($JLMembers as $JLMember) {
if ($FirstName == $JLMember[0] && $LastName == $JLMember[1]) {
echo "<br>You are a member<br>";
break; // Exit the loop once we found a match
}
}