How to create cron job using PHP

Question

I m new to using cron job  I don t even know how to write it  I have tried to search from internet  but I still don t understand it well  I want to create a cron job that will execute my code every minute  I m using PHP to create it  It is not working   Example  run php   Code that will be executed every minute    lt  php  echo  This code will run every minute      gt    cron php   lt  php   path   dirname   FILE      cron    path     run php   echo exec        php -q    cron    amp  gt   dev null       gt    Suppose that these two files are in the same folder   Is the code that I did wrong  If wrong  please kindly tell me how to fix it

User · Answer

Added to Alister  you can edit the crontab usually  not always the case  by entering crontab -e in a ssh session on the server   The stars represent    means every of this unit     Minute   Hour   Day   Month   Day of week  0  sunday to 6  saturday    Command    You could read some more about this here

User · Answer

This is the best explanation with code in PHP I have found so far   http   code tutsplus com tutorials managing-cron-jobs-with-php--net-19428  In short   Although the syntax of scheduling a new job may seem daunting at first glance  it s actually relatively simple to understand once you break it down  A cron job will always have five columns each of which represent a chronological  operator  followed by the full path and command to execute             home path to command the command sh  Each of the chronological columns has a specific relevance to the schedule of the task  They are as follows   Minutes represents the minutes of a given hour  0-59 respectively  Hours represents the hours of a given day  0-23 respectively  Days represents the days of a given month  1-31 respectively  Months represents the months of a given year  1-12 respectively  Day of the Week represents the day of the week  Sunday through Saturday  numerically  as 0-6 respectively      So  for example  if one wanted to schedule a task for 12am on the first day of every month it would look something like this   0 0 1     home path to command the command sh  If we wanted to schedule a task to run every Saturday at 8 30am we d write it as follows   30 8     6 home path to command the command sh  There are also a number of operators which can be used to customize the schedule even further   Commas is used to create a comma separated list of values for any of the cron columns  Dashes is used to specify a range of values  Asterisksis used to specify  all  or  every  value   Visit the link for the full article  it explains    What is the format of the cronjob if you want to enter edit it manually  How to use PHP with SSH2 library to authenticate as the user  which crontab you are going to edit  Full PHP class with all necessary methods for authentication  editing  and deleting crontab entries

User · Answer

That may depend on your web host if you are not hosting your own content  If your web host supports creating chron jobs  they may have a form for you to fill out that lets you select the frequency and input the absolute path to the file to execute  For instance  my web host  DreamHost  allows me to create custom cron jobs by typing in the absolute path to the file and selecting the frequency from a select menu  This may not be possible for your server  in which case you need to either edit the crontab directly or through your host specific method   As Alister Bulman details above  create a PHP file to run using CLI  making sure to include    usr bin env php at the very start of the file before the  lt  php tag  This ensures that the shell knows which executable should be invoked when running the script

User · Answer

function  cron exe  schedules            if   obj- gt get option  cronenabledisable       yes                     interval   1 20               interval    obj- gt get option  cronhowtime                if   obj- gt get option  crontiming       minutes                      interval    interval   60                else if   obj- gt get option  crontiming       hours                      interval    interval   3600                else if   obj- gt get option  crontiming       days                      interval    interval   86400                             schedules  hourlys     array                   interval    gt   interval                   display    gt   cronjob                             return  schedules

User · Answer

There is a simple way to solve this  you can execute php file by cron every 1 minute  and inside php executable file make  if  statement to execute when time  now   like this   lt      suppose we have 1 hour and 1 minute inteval 01 01      interval source    01 01    time now   strtotime   now      60   interval   substr  interval source 0 2    60   substr  interval source 3 2     if   time now    interval    0       do cronjob

User · Answer

Create a cronjob like this to work on every minute                                           usr bin php path to cron php  amp  gt   dev null

User · Answer

In the same way you are trying to run cron php  you can run another PHP script   You will have to do so via the CLI interface though      usr bin env php  lt  php   This file would be say    usr local bin run php     code echo  this was run from CRON     Then  add an entry to the crontab              usr bin php -f  usr local bin run php  amp  gt   dev null   If the run php script had executable permissions  it could be listed directly in the crontab  without the  usr bin php part as well  The  env php  part  in the script  would find the appropriate program to actually run the PHP code  So  for the  executable  version - add executable permission to the file   chmod  x  usr local bin run php   and then  add the following entry into crontab               usr local bin run php  amp  gt   dev null

User · Answer

First open your SSH server with username and password and change to the default root user User with all permissions  then follow the steps below    enter the command crontab -l now you will see the list of all cronjobs  enter crontab -e a file with all cron jobs will be opened  Edit the file with your cronjob schedule as min hr dayofmonth month dayofweek pathtocronjobfile and save the file  Now you will see a response crontab  installing new crontab now again check the list of cronjobs your cron job will be listed there

User · Answer

Better use the project Cron in combination with the Linux cronjob for this task  It allows you to configure run times in your PHP Code  support background jobs and is easy to use  First step call a PHP Script every minute             usr local bin run php  amp  gt   dev null  Second Step use the cron cron Package to configure run times directly in PHP   deprecatedStatus   new ShellJob     deprecatedStatus- gt setCommand  cd  app  amp  amp   usr local bin php cron updateDeprecatedStatus php     deprecatedStatus- gt setSchedule new CrontabSchedule            2        displayDate   new ShellJob     displayDate- gt setCommand  cd  app  amp  amp   usr local bin php cron updateDisplayDate php     displayDate- gt setSchedule new CrontabSchedule            5      You found the details how to use in the linked repository

User · Answer

x000D   x000D   command    php   CRON PATH php    x000D  if substr php uname    0  7      Windows    x000D  pclose popen  start  B     command   r     x000D   else  x000D  shell exec  command     gt   dev null  amp     x000D    x000D   x000D   x000D

User · Answer

Type the following in the linux ubuntu terminal   crontab -e    select an editor  sometime it asks for the editor  and this to run for every minute                                           usr bin php path to cron php  amp  gt   dev null

User · Answer

why you not use curl  logically  if you execute php file  you will execute that by url on your browser  its very simple if you run curl  while true        sleep 60      sleep for 60 sec   1 minute       s   curl init        curl setopt  s CURLOPT URL   your php url to cron        curl exec  s        curl getinfo  s CURLINFO HTTP CODE        curl close  s

[php] How to create cron job using PHP?

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