Greetings Master of PHP /bow

I would like to preform the following task but I'm unable to figure out how, I never really got into Arrays and usually just use work arounds. I would be very greatful for your assistance.

1. I want to Copy and Paste data from my computer into a text field (Multiline)

2. When I click submit the php code should then take all of the data from the text field and seperate each...