mysqli::kill

mysqli_kill

(PHP 5, PHP 7, PHP 8)

mysqli::kill -- mysqli_killAsks the server to kill a MySQL thread

Descrizione

Stile orientato agli oggetti

public mysqli::kill(int $process_id): bool

Stile procedurale

mysqli_kill(mysqli $mysql, int $process_id): bool

This function is used to ask the server to kill a MySQL thread specified by the process_id parameter. This value must be retrieved by calling the mysqli_thread_id() function.

To stop a running query you should 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

Restituisce true in caso di successo, false in caso di fallimento.

Errori/Eccezioni

If mysqli error reporting is enabled (MYSQLI_REPORT_ERROR) and the requested operation fails, a warning is generated. If, in addition, the mode is set to MYSQLI_REPORT_STRICT, a mysqli_sql_exception is thrown instead.

Esempi

Example #1 mysqli::kill() 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:

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User Contributed Notes 1 note

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1
johnjawed at gmail dot com
19 years ago
Be careful using this before mysqli::close.

Killing the thread before actually closing the connection will leave the connection open! And depending on your max_connections and max_user_connections (by default the same), this could result in a "Max connections reached for **** user" message.
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