mysqli::store_result
mysqli::thread_safe
MySQLi
PHP Manual

# mysqli->thread_id

# mysqli_thread_id

(PHP 5)

mysqli->thread_id -- mysqli_thread_id — Returns the thread ID for the current connection

### Beschreibung

Objektorientierter Stil

mysqli
int $thread_id;

Prozeduraler Stil

int mysqli_thread_id ( mysqli `$link` )

The mysqli_thread_id() function returns the thread ID for the current connection which can then be killed using the mysqli_kill() function. If the connection is lost and you reconnect with mysqli_ping(), the thread ID will be other. Therefore you should get the thread ID only when you need it.

> Hinweis: The thread ID is assigned on a connection-by-connection basis. Hence, if the connection is broken and then re-established a new thread ID will be assigned.
> To kill a running query you can use the SQL command KILL QUERY processid.

### Parameter-Liste

`link`

  Nur bei prozeduralem Aufruf: Ein von mysqli_connect() oder mysqli_init() zurückgegebenes Verbindungsobjekt.

### Rückgabewerte

Returns the Thread ID for the current connection.

### Beispiele

Beispiel #1 mysqli->thread_id example

Objektorientierter Stil

`<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
/* determine our thread id */
$thread_id = $mysqli->thread_id;
/* Kill connection */
$mysqli->kill($thread_id);
/* This should produce an error */
if (!$mysqli->query("CREATE TABLE myCity LIKE City")) {
printf("Error: %s\n", $mysqli->error);
exit;
}
/* close connection */
$mysqli->close();
?>`

Prozeduraler Stil

`<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
/* determine our thread id */
$thread_id = mysqli_thread_id($link);
/* Kill connection */
mysqli_kill($link, $thread_id);
/* This should produce an error */
if (!mysqli_query($link, "CREATE TABLE myCity LIKE City")) {
printf("Error: %s\n", mysqli_error($link));
exit;
}
/* close connection */
mysqli_close($link);
?>`

The above examples will output:

    Error: MySQL server has gone away

### Siehe auch

- mysqli_kill() - Asks the server to kill a MySQL thread

mysqli::store_result
mysqli::thread_safe
MySQLi
PHP Manual