Как проверить есть ли имя в txt файле?

$search = $_GET['name'];
$filename = 'names.txt';
$resource = fopen($filename, 'r');
 
if ( !is_resource($resource) ) {
    exit ('ERROR: Cannot open file with names');
}
 
while ( ($line = fgets($resource)) != false ) {
    $line = rtrim($line, "\r\n ");
    if ( strcmp($search, $line) ) {
        $nameFound = true;
        echo "Name {$search} has been successfully found" . PHP_EOL;
        break;
    }
}
 
if ( empty($nameFound) ) {
    echo "Name {$search} wasn't found in the file. Writing it..." . PHP_EOL;
    $resource = fopen($filename, 'a');
    if ( !is_resource($resource) ) {
        exit ('ERROR: Cannot open file with names');
    }
 
    if ( fwrite($resource, $search . PHP_EOL) ) {
        exit ("Name {$search} has been successfully written to the file" . PHP_EOL);
    } else {
        exit ("ERROR: Cannot write name to the file" . PHP_EOL);
    } 
}

if (isset($_GET['name'])) {
    $name = trim((string)$_GET['name']);
 
    if (empty($name)) {
        exit;
    }
 
    $fileName = 'name.txt';
 
    if (!file_exists($fileName)) {
        file_put_contents($fileName, $name);
        exit;
    }
 
    $fileData = explode(PHP_EOL, file_get_contents($fileName));
 
    !in_array($name, $fileData) && $fileData[] = $name;
 
    file_put_contents($fileName, implode(PHP_EOL, $fileData));
}