PHP通过插入mysql数据来实现多机互锁实例_php技巧
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:
{
local dataId="${1}"
local dataDate="${2}"
local sql="insert intot_trans_lock
(dataId, dataDate) values('${dataId}', '${dataDate}');"
echo ${sql} | ${DB_PUBLIC}
return $?
}
在执行失败或者结束的时候释放锁
{
local dataId="${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。

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