if i have a php background job, may need to run 4-5hours or more will it cause exception on memory_limit
PHP has a very primitive memory manager and scripts are not designed to run for very long. You can update the memory limit like this:
<?php ini_set(“memory_limit”,”256M”); ?>
But you will probably still have memory problems. You could try adding a ton of unset() s to your script and this can help a bit. But the memory leaks are probably in PHP and its C/C++ extensions which you can t control. In the past I have had to rewrite background tasks in Java.
In your php.ini increase the amount for memory_limit.
See http://www.ducea.com/2008/02/14/increase-php-memory-limit/
Check out the following PHP commands:
// Sets the max time in seconds the script can run
set_time_limit($sec);
// Increases the memory limit (default is 1.5mb)
ini_set("memory_limit", "256M");
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