Read stdin line by line - php

Question

I need to read stdin with php. I need to read first line > save it to the variable > print this variable > read second line > save it to same variable (rewrite old content) > print it - read third line > ... > end of inserted text.

example of imput data:

u A
u B
h A > B 1 :h1
u C
h B > C 1 :h2
u D

Can somebody help me?

Have you attempted to write any code? If so, could you post the relevant code snippet? — Kaarel Nummert, Mar 06 '14 at 13:07

score 0 · Answer 1 · edited May 23 '17 at 10:26

0

Here is an example how to do this. PHP standard input?

here is http://www.php.net/manual/en/features.commandline.io-streams.php php manual for manipulating i/o streams

If you have any further questions don't hessitate to ask

edited May 23 '17 at 10:26

Community

1
1

answered Mar 06 '14 at 13:11

Viktor Todorov

82
2

Thanks links that you posted was very useful. I am already writing my script and I found new problem. Now I am reading STDIN with fgets but problem is, that I need to read one single line even if I copy-paste content to STDIN. example and code here:akela.mendelu.cz/~xmikulka/test.html This script will put all there 3 lines in to variable $line, but I need to put only "1st line" to $line. How to do it? sorry for my bad english – user3016214 Mar 07 '14 at 13:33

Read stdin line by line - php

1 Answers1