Check a blank line while reading a file

[kb0000]

I want to read a file abc.txt

 

It has contents in the format

 

This is line 1.

 

This is line 3. Further in this line.

This is line 4.

 

This is line 6.

 

I want to read this file (line by line, i think) and check if the current line is blank (like there is no Line 2 i.e. a blank line.)

 

What I want to do is that - now in the above text file there are 3 sets of line or 3 paragraphs. I want to check if there is a blank line between two set of lines.

Or is there some way to fetch paragraphs???

 

I want to separate these 3 sets of line in 3 rows in an excel sheet.

i.e.

In excel sheet columns:

A1 - This is line 1.

A2 -This is line 3. Further in this line.

This is line 4.

A3 -

This is line 6.

 

How I can do this?

[ignace]

$lines = file('path/to/file.txt', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);