I'm Working on a php app where I need to have a number count in a sql data base reset at the first of the month and at 12am everyday via PHP and MYSQL.
I have googled but found nothing. As far as I know PHP needs to be accessed by a client to be manipulated.
What is the best method of having the server do this on its own?
You can use crontab
* 0 * * * /path/to/my/script
You can use cronjobs. On windows 'scheduled tasks', on linux crontab. For linux:
crontab -e
A line have to look like this to be called every day 0 am:
* 0 * * * /bin/php -q /script/path
Or, to call the file via web but do not get the content:
* 0 * * * wget --spider "http://url.com/cron.php"
If you do not have a dedicated server, check your webspace control panel for this or ask your webhoster.
Related
I wrote a PHP script that push a CSV file into a database. I want to do this automatically every minute. I know there is a way via cron on Linux but I don't know anything about bash and think cron can't give my PHP file a callback, so I can show a progress bar for the user to see the timer interval. What do I do?
You can enter your jobs using crontab -e. If your default editor is vi, I recommend to change it nano using export EDITOR=nano because it is easy to use for starters.
Every line of the crontab file represents a job. The first 5 tokens are : minute, hour, day of month, month, day of week respectively, the last one is command so in your case first 5 tokens will be * * * * * that means run this job every minutes when the second is '00'.
You can call your php files directly using this command : php /var/www/cron.php & or using a browser wget -O /dev/null http://example.com/cron.php If you use first one you cannot use some $_SERVER variables but if you use second one, it is like a real browser.
In your case you can use like this :
* * * * * wget -O /dev/null http://example.com/cron.php
to add a cron and make it run every minute, type crontab -e and add the following line
* * * * * command you need executing
example:
* * * * * ls -l /home/ > /usr/local/users.txt
* * * * * df -h > /tmp/filesystem_usage.txt
* * * * * service httpd restart
Look at this for a starter: http://kvz.io/blog/2007/07/29/schedule-tasks-on-linux-using-crontab/
Also remember that cronjobs don't support all $_SERVER vars like 'DOCUMENT_ROOT' and 'HTTP_HOST', so try to avoid them, or use a workaround.
Some 'callback' possibilities:
- Let your script trigger another script
- Redirect the output of your cron to an another bash script
- ...
I currently have a PHP website built with codeigniter, and i'm having issues with CLI and cron jobs.
The CLI is setup so the controller running the script is found in the /application/controllers/scrape on the server (looking via the ftp) this would be /public_html/application/controllers/scrape, the function to run is called all_sites.
I'm hosted with TSOhost and can successfully run the command using the browser via URL (website.com/index.php/scrape/all_sites)however the script times out, hence the need to use a cron job to run the script.
So far i have tried the following raw cron commands in the advanced mode in the TSOhost control panel when trying to get the script to run daily:
The TSOhost technician set this up
03 19 * * * /usr/bin/php-5.3 /var/sites/s/website.com/public_html/application/controllers/scrape.php (didn't work)
0 6 * * * /usr/bin/wget -O /dev/null -o /dev/null http://www.speeddatemate.com/index.php/scrape/all_sites
0 6 * * * /usr/bin/php-5.3 /var/sites/s/speeddatemate.com/public_html/application/controllers/scrape/all_sites
03 19 * * * /usr/bin/php-5.3 /var/sites/s/speeddatemate.com/public_html/application/controllers/scrape.php
03 19 * * * /usr/bin/php-5.3 /var/sites/s/speeddatemate.com/public_html/application/controllers/scrape/all_sites
10 18 * * * /usr/bin/php-5.3 /var/sites/s/speeddatemate.com/public_html/index.php scrape all_sites
TSO host have stated:
For referencing your site path, use /var/sites/s/website.com
The path to PHP 5.2 is /usr/bin/php and for 5.3 it's /usr/bin/php-5.3
The technician also said:
"To run from CLI you would need to find a way to get those parameters into the script, they can't be appended to the command."
Although is this not the Point of the command?
I've also tried running it via the "make a http request" option which creates the raw job as:
0 6 * * * /usr/bin/wget -O /dev/null -o /dev/null http://www.speeddatemate.com/index.php/scrape/all_sites
Again this does not work.
I've searched high and low to find a way to get this working and read various posts and tried various methods nothing has worked. Can anyone help?
First off, don't bother setting up a cron job unless you have it working on the command line. You will end up mixing different things and generating a plethora of unwanted possibilities for debugging which will confuse you further.
Now, you are saying that
I can successfully run the command using the browser via URL (website.com/index.php/scrape/all_sites), however the script times out
This could be because the script takes longer than 30 seconds to complete, and thus is hitting the max-execution-time in php. Check this.
If this is the case, check this and answers over here and here to resolve it by increasing the limit.
Once you have a working version of the script, either via browser or via command line, you can go ahead and schedule the cron jobs, like already shared by your TSOhost tech support.
03 19 * * * /usr/bin/php-5.3 /var/sites/s/website.com/public_html/application/controllers/scrape.php (didn't work)
0 6 * * * /usr/bin/wget -O /dev/null -o /dev/null http://www.speeddatemate.com/index.php/scrape/all_sites
Once again, setup the crons only after you have the other pieces working.
If it still doesn't work, give more info regarding:
What exactly the script does? Does it download something, does it backup something; update the question with whatever it does.
What parameters does it require? and how were you passing them via the url?
What do the logs say? Assuming your webserver is apache, you can usually find them at /var/log/apache2/error.log and /var/log/apache2/access.log.
EDIT 1
OP says in comments that php index.php scrape all_sites works for him.
Assuming that works from the root of of his app, where path to index.php can be asssumed to be /var/sites/s/website.com/public_html/application/index.php, try this cron job then
03 19 * * * cd /var/sites/s/website.com/public_html/application/ && /usr/bin/php-5.3 index.php scrape all_sites
If possible, schedule it for a time closer to current time rather than a fixed job for 19:03
If this still doesn't work, and assuming the max-execution-time has already been taken care of, the problem could be with one of your environment variables - your cli shell environment is having some variables that are missing from your cron environment.
In my experience, I have found that PATH variable causes the most troubles, so run echo $PATH on your shell, and if the path value you get is /some/path:/some/other/path:/more/path/values, run your cron job like
03 19 * * * export PATH="/some/path:/some/other/path:/more/path/values" && cd /var/sites/s/website.com/public_html/application/ && /usr/bin/php-5.3 index.php scrape all_sites
If this doesn't work out, check all the environment variables next.
Use printenv > ~/shell_environment.txt from a normal shell to get all the environment variables set in the shell. Then use the following cron entry * * * * * printenv > ~/cron_environment.txt to get the variables from the cron environment.
Compare the two - shell_environment.txt and cron_environment.txt for any unset variable which you need to tinker with in cron environment.
First of all make sure your script run as expected from your browser. If so then you can try to run it from command line. Lets assume following is your controller.
<?php
class Scrape extends CI_Controller {
public function all_sites($some_parameter = 'working')
{
echo "Its {$some_parameter}!".PHP_EOL;
}
}
?>
As per your provided information to run the command you can run
/usr/bin/php-5.3 /var/sites/s/website.com/public_html/index.php scrape all_sites
And set cron as
03 19 * * * /usr/bin/php-5.3 /var/sites/s/website.com/public_html/index.php scrape all_sites
If you need to pass a parameter, pass the parameter like:
/usr/bin/php-5.3 /var/sites/s/website.com/public_html/index.php scrape all_sites "Working fine"
Enjoy!
You can read reference document about Running via the CLI from codeigniter here
I currently have a system where on the client side this Update function is called every X amount of seconds:
var Update = function(){
$.getJSON("PHP/Update.php",{
userid: userID },
function(json){
doSomething();
});
}
In the PHP file some values are updated and these new values are sent back to the client.
<?php
session_start();
include 'dbconnect.php';
$userid = $_GET['userid'];
//Change some values in the database
//Add these new values to $json array
echo json_encode($json);
mysqli_close($link);
?>'
This works great when there is exactly one client active at all time. Not so much when there are multiple or no clients active. So what I want is that this PHP files gets called once every X amount of time, regardless of how many clients there are. I realize I probably have to create a loop in PHP but I just can't get it working. Can anyone tell me how I'm supposed to do this? Thanks in advance.
The tool you use to schedule things in unix-style operating systems is cron. If your server runs MS Windows, you'll need to use some other scheduler.
There are a couple of ways that you can use cron to run your script.
First off, if you have a CLI version of PHP available (as opposed to an Apache module or a fcgi version), you can run it directly. On my system, a cron job to run the script once per minute might look like this:
* * * * * /usr/local/bin/php /path/to/your/script.php
Note that on your system, the php binary might be located in /usr/bin/ or /opt/local/bin/ or somewhere else. You'll need to check with your operating system's package repository to find out where, or type which php from a terminal.
If you use a "shebang" at the beginning of your script, you can get away with a simpler cron job:
* * * * * /path/to/your/script.php
More information about running PHP shell scripts can be found here. A word of warning though... If you launch scripts directly like this, they will run as the user who owns the cron job, which may have security (or at least permission) implications. If you don't understand what this means, please ask more questions before doing it!
If you don't have a command line PHP available, you can still have the PHP script run via cron, by fetching it from a command-line HTTP client like curl or wget or fetch (depending on your operating system). For example:
* * * * * curl -o /dev/null http://example.com/path/to/script.php
or
* * * * * wget -O /dev/null http://example.com/path/to/script.php
On a unix system you can man crontab for instructions on how to install cron jobs, and probably man 5 crontab (depending on your operating system) for instructions on the format for setting specific times. Note that cron uses 1-minute granularity. If you want greater frequency than that, you can fake it. For example, for three times per minute:
* * * * * /path/to/your/script.php
* * * * * sleep 20; /path/to/your/script.php
* * * * * sleep 40; /path/to/your/script.php
And if you want lesser frequency, you use crontab's documented format. For example, every five minutes on weekdays but every 10 minutes on weekends:
*/5 * * * 1-5 /path/to/your/script.php
*/10 * * * 6-7 /path/to/your/script.php
I've created a cron job in AWS EC2 but it is not working.
I followed below steps to create cron tab:
Step 1: I logged in to AWS EC2 Instace
step 2: crontab -e
Step 3: Insert mode
Step 4: I entered * * * * * php/var/www/html/welcome.php (To run every min.)
Step 5: :wq
Cron tab is created but not running.
Please can you any one help me if is there any PHP script means please provide me. Do I need to give spaces between every star?
First of all, you need to put an space between php and /var:
From
* * * * * php/var/www/html/welcome.php
to
* * * * * php /var/www/html/welcome.php
^
Then, you'd better use /bin/php instead of just php. To determine where the php executable is located, type which php in your console, it will give you the file path. So it will become something like this:
* * * * * /bin/php /var/www/html/welcome.php
^^^^^^^^
More things:
check if crontab is saved properly? Type crontab -l. Your new crontab line should be there.
is the script exactly in this dir? Try ls -l /var/www/html/welcome.php.
is the script executing if you do from console? Try /bin/php var/www/html/welcome.php to see if it is a script or crontab problem.
does the script have executing mode? Try chmod 755 /var/www/html/welcome.php
Keep us updated so we can find what can be causing the error.
May be a too late but anyways if you intend to run the script every minute the command should probably be
* * * * * php /var/www/html/welcome.php
Running cron on EC2 is not any different from running on any *nix server - as far as I know.
I would check of the system messages for any errors. You can also redirect stderr/stdout to a file as in
* * * * * <your script> >> /var/tmp/out.log 2>&1
and check for any issues for starters.
I need to setup a cron job that'll execute a PHP script (used to send iPhone notification to users) every minute. I've tried several code snippets but none of them seem to work. Here's what I've tried:
crontab -e
then..in the editor, i typed
* * * * * php /Users/MYUSERNAME/Desktop/SimplePush/simplepush.php
but it doesn't work. I'm running on Mac OS X Lion and will be deploying the service on Linux service but i think the crontab ability shouldn't quite be affected by the OS as both are based on unix core. So, anyway, I need this cronjob to fire simplepush.php every minute to send notifications. How do I do it?
Have you tried running php /Users/MYUSERNAME/Desktop/SimplePush/simplepush.php in the terminal to check if it's working?
use this code :
* * * * * wget -q /Users/MYUSERNAME/Desktop/SimplePush/simplepush.php
or
* * * * * wget -o /Users/MYUSERNAME/Desktop/SimplePush/simplepush.php
I know this is an old question but this works for me in OSX Yosemite
*/1 * * * * php -q /Users/path/to/php-file.php