Ask how to split the txt file by blank lines,

Ask how to split the txt file by blank lines, and ask how to split the txt file by blank lines,
For example, txt file a.txt

The content is as follows:
Ah, ah
Er, er

111111
222222

Ga
Ga

If there is a blank line in it, how can we cut it into a character string in the segment?

Reply to discussion (solution)

$ Content = file_get_contents ('./a.txt ');
$ Rows = explode ("\ r \ n", $ content );

Call the function file.

If it is split by blank lines, we need to find two line breaks (\ r \ n ).
$ Str = '2017
Defsf

Abc
1213

&*(
';
Print_r (explode ("\ n \ r", $ str); // equivalent to print_r (explode ("\ r \ n", $ str ));
Or use regular expressions.
Preg_match ('/[^.] +? (? = \ R \ n)/', $ str, $ mat );
Print_r ($ mat );

Use preg_match_all for the regular expression.

$ S = <TXT ah er) \ 1/", $ s); print_r ($ );

Array ([0] => Ah ah er [1] => 111111222222 [2] => Ga)

$ S = <TXT ah er) \ 1/", $ s); print_r ($ );

Array ([0] => Ah ah er [1] => 111111222222 [2] => Ga)

The result of my testing of this code is:

Array ([0] => Ah, ah, er, er, 111111, 222222)

If the file data is small, you can read the content at one time and use the explode method to split it.
If the file size is very large, one-time loading will inevitably lead to excessive memory usage and low performance. In this case, you can read the open file row by row and verify the row data for segmentation.

$ Content = file_get_contents ('./a.txt ');
$ Rows = explode ("\ r \ n", $ content );

In this way, the line feed is used instead of space.

Array ([0] => Ah ah [1] => er [2] => [3] => 111111 [4] => 222222 [5] => [6] => Ga [7] => Ga [8] =>)

According to friends on the third floor, use $ rows = explode ("\ r \ n", $ content );
The output result is

Array ([0] => Ah, ah, er, er, 111111, 222222)