Knowledgebase

To edit the server default settings for Wordpress and Joomla requirements as well as other php applications you can edit and insert the following lines in the configuration files to allow your to change the limits on your website

You can create a .user.ini file in the root folder of the website, this is "wwwroot" in the file manager

max_execution_time=600
upload_max_filesize=200M
post_max_size=200M
memory_limit=256M 

Alternatively you can do it in the application config file itself.

Wordpress

1. Edit wp-config.php file

@ini_set( 'upload_max_filesize' , '128M' );
@ini_set( 'post_max_size', '128M');
@ini_set( 'memory_limit', '256M' );
@ini_set( 'max_execution_time', '300' );
@ini_set( 'max_input_time', '300' );

for wordpress memory limit alone you can use 
define( 'WP_MEMORY_LIMIT', '256M' );

OR

2. Navigate to your active theme folder in "wp-content" and edit your "functions.php" file. Open it up, and at the very top, insert:

@ini_set( 'upload_max_filesize' , '128M' ); 
@ini_set( 'post_max_size', '128M'); 
@ini_set( 'memory_limit', '256M' ); 
@ini_set( 'max_execution_time', '300' ); 
@ini_set( 'max_input_time', '300' );

for wordpress memory limit alone you can use
define( 'WP_MEMORY_LIMIT', '256M' );

Joomla
edit the configuration.php file in the root folder and at the top of the file insert

ini_set('post_max_size','64M');
ini_set('upload_max_filesize','64M')

and then save the file