Question How Do I update php.ini file ?

[AndrewN]

What is recommended settings of
post_max
memory_limit
maximum_execution_time in plesk ?

 

[Monty]

That depends on your PHP application.
As a general rule, post_max_size should never be lower than memory_limit.
We use memory_limit 256M and post_max_size 256M here and this is compatible to most PHP applications. Some apps such as Magento require a higher value, but for most apps this is sufficient.
For max_execution_time anything between 30 and 300 seconds should be fine

 

[Hex]

Requirements | WordPress.org
Joomla! Downloads - Technical Requirements to run your Joomla! Website
system-requirements - install - setup - getting-started - Documentation - our.umbraco.org
https://<your_php_application>/requirements

As @Monty described through the PHP settings on (Website & Domains) if you're a customer or subscription level if you're an admin.

 

[AndrewN]

That depends on your PHP application.
As a general rule, post_max_size should never be lower than memory_limit.
We use memory_limit 256M and post_max_size 256M here and this is compatible to most PHP applications. Some apps such as Magento require a higher value, but for most apps this is sufficient.
For max_execution_time anything between 30 and 300 seconds should be fine

Thank you for answer,
I have done the settings for simple website as follows
post_max = 10M
memory_limit = 128M
max_execution_time = 90