Why flock does not work, what to do?

Question

PHP

$file_name = 'text.json';
    $fp = fopen($file_name, "r+");
    flock($fp, 2);
    $array = fread($fp, filesize($file_name));
    //flock($fp, LOCK_UN);
    fclose($fp);

    $fp = fopen($file_name, "w+");
    flock($fp, 2);
    fwrite($fp, $array+1); //здесь отработает 
    flock($fp, 3);
    fclose($fp);

Answer 1

and with what fright does he not work out?
Hike, you do not really understand what is lok. or rather, you don’t understand at all: when you lock, other processes
will not be able to write to the file .