CentOS 6.7 multiple PHP versions OVH Release 3

If you have an OVH Server with CentOS Release 3, you could want to use in some website a new PHP version than PHP 5.3.3 which is included on this Linux distribution. Here you can see how to install PHP 5.6 working together with PHP 5.3.3.

split() is deprecated as of PHP 5.3.0

I am upgrading an old PHP website and I have found several deprecated functions one of them is “split()” which I used many times in the past. Which functions we can use right now? And why is this massive used function deprecated?