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PHP通过插入mysql数据来实现多机互锁实例,mysql实例_PHP教程

时间:2021-07-01 10:21:17 帮助过:3人阅读

PHP通过插入mysql数据来实现多机互锁实例,mysql实例


本文实例讲述了PHP通过插入mysql数据来实现多机互锁的方法,分享给大家供大家参考。具体实现方法如下:

在执行流程之前可以加一般锁,shell枷锁函数如下,如果成功则会返回0,否则返回非0值:

代码如下:function get_lock()
{
local dataId="${1}"
local dataDate="${2}"

local sql="insert intot_trans_lock
(dataId, dataDate) values('${dataId}', '${dataDate}');"
echo ${sql} | ${DB_PUBLIC}

return $?
}

在执行失败或者结束的时候释放锁
代码如下:function free_lock()
{
local dataId="${1}"
local dataDate="${2}"
local status="${3}"

local sql="delete from t_trans_lock
where dataId='${dataId}' and dataDate='${dataDate}';"
echo ${sql} | ${DB_PUBLIC}
if [ $? -ne 0 ]; then
write_log ${dataId} "free lock failed"
fi
return ${status}
}

希望本文所述对大家的PHP+MySQL程序设计有所帮助。


一个PHP简单的插入数据库/读取示例





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