Execute PHP scripts using cronjob timer under Linux

Entering commands in Linux

Crontab-e

Then use the VIM command to edit the open file, enter

0 * * * */usr/bin/php-f/home/userxxx/update.php

Save, exit, OK, now the system will automatically execute the update.php script at each 0 point, the script can write the database execution, automatic email and other functions.

Note : Written directly to 0 * * * * php-f/home/userxxx/update.php will not work.

In addition, the cronjob format is:

MIN HOUR DOM MON DOW CMD

Field	Description	allowed Value
MIN	Minute Field	0 to 59
HOUR	Hour Field	0 to 23
Dom	Day of Month	1-31
MON	Month Field	1-12
DOW	Day of Week	0-6 (0 = Sunday)
Cmd	Command	Any command to be executed.

Use (-) to delimit range

Example: 0 0-6 * * command means 0-6-point execution command per day

Use (,) to enumerate time

such as: 0,15,30,45 * * * * command means 0 points per hour, 15 points, 45 points, 30 Chapter execution command

Use (/) to specify the interval

such as: * */4 * * * command means execute command every four hours

Combination usage

0-10/2 * * * * command means that the command is executed every 2 minutes within the first 10 minutes

Execute PHP scripts using cronjob timer under Linux