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.
mysqli::kill
mysqli_kill
(PHP 5, PHP 7, PHP 8)
mysqli::kill -- mysqli_kill — Asks the server to kill a MySQL thread
Description
Object-oriented style
Procedural style
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.
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
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User Contributed Notes 1 note
johnjawed at gmail dot com ¶
20 years ago
