Function.mysqli-thread-id

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mysqli_thread_id

(PHP 5)

mysqli_thread_id

(no version information, might be only in CVS)

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

Inhaltsverzeichnis

Description

Procedural style:

int mysqli_thread_id ( object link)
</BR >

Object oriented style (property):

class mysqli {
</BR >int thread_id
</BR >}

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

Anmerkung: 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.


Return values

mysqli_thread_id() returns the Thread ID for the current connection.


See also

function.mysqli-kill


Example


Beispiel 1. Object oriented style

<?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();
?>

Beispiel 2. Procedural style

<?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 would produce the following output: 

Error: MySQL server has gone away
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