php, server mysql telah hilang

Saya berasumsi masalah Anda adalah skrip dapat dieksekusi untuk waktu yang sangat lama sebelum mengirim kueri UPDATE pertama.

Anda harus memeriksa nilai wait_timeout di my.cnf. Anda dapat memeriksa waktu tunggu_waktu dengan menjalankan kueri "TAMPILKAN VARIABEL;"

Anda juga dapat mencoba potongan kode untuk menyambungkan kembali:

if (!mysql_ping ($conn)) {
   //here is the major trick, you have to close the connection (even though its not currently working) for it to recreate properly.
   mysql_close($conn);
   $conn = mysql_connect('localhost','user','pass');
   mysql_select_db('db',$conn);
}

Menggabungkan dengan kode Anda akan menjadi:

mysql_connect("localhost", "xxx", "xxx") or die(mysql_error());
mysql_select_db("xxx") or die(mysql_error());
$sql = mysql_query("SELECT id FROM db");
while ($data = mysql_fetch_assoc($sql)) {
    if (!mysql_ping ()) {
       //here is the major trick, you have to close the connection (even though its not currently working) for it to recreate properly.
       mysql_close();
       mysql_connect("localhost", "xxx", "xxx") or die(mysql_error());
       mysql_select_db("xxx") or die(mysql_error());
    }

    $ids[] = $data['id'];
    $content = file_get_contents("http://www.id.com/?id=$id");
    if (stristr($content, "the id is ok man")) {
        mysql_query("UPDATE db SET status = 'OK' WHERE id = '$id'");
    }
}