# mysqli::kill

# mysqli_kill

(PHP 5, PHP 7)

mysqli::kill -- mysqli_kill — Asks the server to kill a MySQL thread

### Description

Object oriented style

public mysqli::kill ( int `$processid` ) : bool

Procedural style

mysqli_kill ( mysqli `$link` , int `$processid` ) : bool

This function is used to ask the server to kill a MySQL thread specified by the `processid` 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

`link`

  Procedural style only: A link identifier returned by mysqli_connect() or mysqli_init()

### Return Values

Returns `TRUE` on success or `FALSE` on failure.

### 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() - Returns the thread ID for the current connection