Increasing Memory Limit To PHP

Some servers (usually shared hosting plans) have a very low PHP memory limit by default. 

Low PHP memory limit can cause a blank screen (also know as the white screen of death), including other errors on your website. Luckily, increasing the PHP memory limit is a very simple task and can be done with a small tweak in your wp-config.php file.

Have a look below at how to increase your memory limit or read the documentation on WordPress CODEX.

Increasing the Memory Limit

Open your wp-config.php file via FTP and add the following code right above the last line says "That’s all, stop editing! Happy blogging":

define( 'WP_MEMORY_LIMIT', '512M' );

You can alter the 512MB to any value you want, but 512MB should work pretty well for most live sites.