mysqli::kill

mysqli_kill

Asks the server to kill a MySQL thread

Warning

This function has been DEPRECATED as of PHP 8.4.0. Relying on this function is highly discouraged.

Description

Object-oriented style

public bool mysqli::kill(int $process_id)

Procedural style

bool mysqli_kill(mysqli $mysql, int $process_id)

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.

Parameters

mysql

Procedural style only: A mysqli object returned by mysqli_connect or mysqli_init

Return Values

Returns true on success or false on failure.

Errors/Exceptions

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.

Changelog

Version Description
8.4.0 Both mysqli::kill and mysqli_kill are now deprecated. Use the KILL SQL command instead.

Examples

Example #1 mysqli::kill example

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();
?>

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 will output:

Error: MySQL server has gone away

See Also

  • mysqli_thread_id