Can I cut a txt file by KB in php? how can I deal with it?

Php cutting txt documentation can be cut by KB? 1. php cutting txt documentation can be cut by KB? & nbsp; 2. I am looking for someone online to cut by line. I divided several txt files, but there was no content in them. how can I modify PHPcode ;? Php?fn_in=&quot=34465.txt & quot; $ f can I cut txt files by KB?
1. Can I cut the txt file in php by KB?
2. I am online looking for a house to cut it by line. I divided several txt files, but there was no content in them. how can I modify them?

PHP code

------ Solution --------------------
1. yes
2. try again as follows.

PHP code

$ Fn_in = "34465.txt"; $ fn_out = 'hgc _ '; $ n = 1; $ fp_in = fopen ($ fn_in, 'r'); while (! Feof ($ fp_in) {export fp_out1_fopen(%fn_out.%n.'.txt ', 'w'); $ n ++; $ line = fgets ($ fp_in); fputs ($ fp_out, $ line ); fclose ($ fp_out);} fclose ($ fp_in );
------ Solution --------------------
Open by rb. won't you read and write files.