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Old 03-17-2009, 07:50 PM   #1
gatorpower
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Getting Shell Script to Execute IF new row in Postgres SQL is added? (PHP)


Firstly, I do not want to use cron. I want it to be instantaneous.

I am working on a web server where the hosts turned-on safe mode and turned off a-lot of the functions for PHP (including exec) in order to secure their servers. Outside of that, I do have access to chroot and can pretty much do anything on the server.

I want to use ImageMagick to create dynamic images based on form data.

I was trying to find a work-around with PHP where I can still use ImageMagick (a shell-based imagining program) by causing SQL to execute a shell script after the form data is saved to a table. Is there anyway it could cause a flag to automatically run a shell script when someone adds a new row to a certain table.

It has to be instantaneous, more or less, so that the user isn't sitting there waiting for a minute for cron to catch any changes to the database. Thanks
 
Old 03-18-2009, 12:45 AM   #2
graemef
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I assume that safe mode is on and the safe_mode_exec_dir is set, limiting system programs that can be executed to just that directory. Can you put your script in that directory?

I'm not certain if PostgreSQL can run a system command but if it can then you can do it from a trigger.
 
  


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