linux下实现定时执行php脚本

在linux中输入命令

代码如下:

然后使用vim的命令编辑打开的文件，输入

代码如下:

PHP -f /home/userxxx/update.PHP

保存，退出，好了，现在系统会在每个0点自动执行update.PHP脚本，脚本中可以编写数据库执行，自动发邮件等功能。

注：直接写成 0 * * * * PHP -f /home/userxxx/update.PHP将不会起作用。

另外cronjob的格式为：

MIN HOUR DOM MON DOW CMD

ottom: silver 1px solid; color: rgb(0,0); border-left: silver 1px solid; line-height: 25px"> ottom: silver 1px solid; padding-bottom: 3px; padding-top: 3px; padding-left: 3px; border-left: silver 1px solid; padding-right: 3px">Field ottom: silver 1px solid; padding-bottom: 3px; padding-top: 3px; padding-left: 3px; border-left: silver 1px solid; padding-right: 3px">MINottom: silver 1px solid; padding-bottom: 3px; padding-top: 3px; padding-left: 3px; border-left: silver 1px solid; padding-right: 3px">Minute fieldottom: silver 1px solid; padding-bottom: 3px; padding-top: 3px; padding-left: 3px; border-left: silver 1px solid; padding-right: 3px">0 to 59ottom: silver 1px solid; padding-bottom: 3px; padding-top: 3px; padding-left: 3px; border-left: silver 1px solid; padding-right: 3px">HOURottom: silver 1px solid; padding-bottom: 3px; padding-top: 3px; padding-left: 3px; border-left: silver 1px solid; padding-right: 3px">Hour fieldottom: silver 1px solid; padding-bottom: 3px; padding-top: 3px; padding-left: 3px; border-left: silver 1px solid; padding-right: 3px">0 to 23ottom: silver 1px solid; padding-bottom: 3px; padding-top: 3px; padding-left: 3px; border-left: silver 1px solid; padding-right: 3px">DOMottom: silver 1px solid; padding-bottom: 3px; padding-top: 3px; padding-left: 3px; border-left: silver 1px solid; padding-right: 3px">Day of Monthottom: silver 1px solid; padding-bottom: 3px; padding-top: 3px; padding-left: 3px; border-left: silver 1px solid; padding-right: 3px">1-31ottom: silver 1px solid; padding-bottom: 3px; padding-top: 3px; padding-left: 3px; border-left: silver 1px solid; padding-right: 3px">MONottom: silver 1px solid; padding-bottom: 3px; padding-top: 3px; padding-left: 3px; border-left: silver 1px solid; padding-right: 3px">Month fieldottom: silver 1px solid; padding-bottom: 3px; padding-top: 3px; padding-left: 3px; border-left: silver 1px solid; padding-right: 3px">1-12ottom: silver 1px solid; padding-bottom: 3px; padding-top: 3px; padding-left: 3px; border-left: silver 1px solid; padding-right: 3px">DOWottom: silver 1px solid; padding-bottom: 3px; padding-top: 3px; padding-left: 3px; border-left: silver 1px solid; padding-right: 3px">Day Of Weekottom: silver 1px solid; padding-bottom: 3px; padding-top: 3px; padding-left: 3px; border-left: silver 1px solid; padding-right: 3px">0-6（0表示星期天）ottom: silver 1px solid; padding-bottom: 3px; padding-top: 3px; padding-left: 3px; border-left: silver 1px solid; padding-right: 3px">CMDottom: silver 1px solid; padding-bottom: 3px; padding-top: 3px; padding-left: 3px; border-left: silver 1px solid; padding-right: 3px">Commandottom: silver 1px solid; padding-bottom: 3px; padding-top: 3px; padding-left: 3px; border-left: silver 1px solid; padding-right: 3px">Any command to be executed.