在php中使用Se地图hore的进程锁

<?php $key = ftok('/tmp', 'a');


$id = sem_get($key);


if (sem_acquire($id)) {
    echo "acquire id, and sleep 5s\n";
    sleep(5);
    echo "5s past, release id\n";
    sem_release($id);
}

<?php $key = ftok('/tmp', 'a');

$id = sem_get($key);
$k = 1;
$i = array('k'=>0);

if (sem_acquire($id)) {
    $shmid = shm_attach($key);
    if (shm_has_var($shmid, $k)) {
        $i = shm_get_var($shmid, $k);
        $i['k']++;
        shm_put_var($shmid, $k, $i);
    }
    else { 
        shm_put_var($shmid, $k, $i);
    }
        
    sem_release($id);
}

<?php $key = ftok('/tmp', 'a');


$id = sem_get($key);
$k = 1;
$i = 0;


$shmid = shm_attach($key);
if (shm_has_var($shmid, $k)) {
    var_dump(shm_get_var($shmid, $k));
}
else { 
    echo "var $k is not find";
}