在CSV文件中查找失败

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
    }
}