Make LSPHP 5.3 work with LiteSpeed webserver on CloudLinux cPanel server and MultiPHP Manager. (CentOS 6/7)
Login to LiteSpeed admin panel.
Go to General >> Configuration >> Server.
Click on External App >> Add.
Select Type as LSAPI App >> Next. (Attachment PHP5.3-1.png)
Fill the information as shown in below image and save. : (Attachment PHP5.3-2.png)
Click on ScriptHandler >> Add.
Fill the information as shows in below image and save. : (Attachment PHP5.3-3.png)
Graceful restart LiteSpeed.
Login to cPanel and go to MultiPHP Manager.
Select the version for subdomain/addon domain as alt-php53. : (Attachment PHP5.3-4.png)
Create phpinfo page under website and hit the URL. : (Attachment PHP5.3-5.png)