array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'it', ), 'this' => array ( 0 => 'mysqli.thread-id.php', 1 => 'mysqli::$thread_id', 2 => 'Returns the thread ID for the current connection', ), 'up' => array ( 0 => 'class.mysqli.php', 1 => 'mysqli', ), 'prev' => array ( 0 => 'mysqli.store-result.php', 1 => 'mysqli::store_result', ), 'next' => array ( 0 => 'mysqli.thread-safe.php', 1 => 'mysqli::thread_safe', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/mysqli/mysqli/thread-id.xml', ), 'history' => array ( ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); contributors($setup); ?>

mysqli::$thread_id

mysqli_thread_id

(PHP 5, PHP 7, PHP 8)

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

Descrizione

Stile orientato agli oggetti

int $mysqli->thread_id;

Stile procedurale

mysqli_thread_id(mysqli $mysql): int

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 different. Therefore you should get the thread ID only when you need it.

Nota:

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.

Elenco dei parametri

link

Solo nello stile procedurale: un identificatore restituito da mysqli_connect() o mysqli_init()

Valori restituiti

Returns the Thread ID for the current connection.

Esempi

Example #1 $mysqli->thread_id example

Stile orientato agli oggetti

<?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();
?>

Stile procedurale

<?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);
?>

I precedenti esempi visualizzeranno:

Error: MySQL server has gone away

Vedere anche: