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 — 让服务器杀死一个 MySQL 线程
说明
面向对象风格
过程化风格
本函数可以用来让服务器杀掉 process_id 参数指定的
MySQL 线程。必须通过调用 mysqli_thread_id() 函数来检索该值。
要停止正在运行的查询，应该使用 SQL 命令 KILL QUERY processid。
返回值
成功时返回 true， 或者在失败时返回 false。
错误／异常
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.
示例
示例 #1 mysqli::kill() 示例
面向对象风格
<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
/* 检查连接是否成功 */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
/* 获得连接对应的线程 ID */
$thread_id = $mysqli->thread_id;
/* 杀掉连接 */
$mysqli->kill($thread_id);
/* 下面的代码应该会发生错误 */
if (!$mysqli->query("CREATE TABLE myCity LIKE City")) {
printf("Error: %s\n", $mysqli->error);
exit;
}
/* 关闭连接 */
$mysqli->close();
?>过程化风格
<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* 检查连接是否成功 */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
/* 获得连接对应的线程 ID */
$thread_id = mysqli_thread_id($link);
/* 杀掉连接 */
mysqli_kill($link, $thread_id);
/* 下面的代码应该会发生错误 */
if (!mysqli_query($link, "CREATE TABLE myCity LIKE City")) {
printf("Error: %s\n", mysqli_error($link));
exit;
}
/* 关闭连接 */
mysqli_close($link);
?>以上示例会输出：
Error: MySQL server has gone away
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User Contributed Notes 1 note
johnjawed at gmail dot com ¶
20 years ago
