PHP script to access text file?

Question

PHP

Good afternoon, participants. Such a situation, I am not strong in writing code, so I came to you with a question. Actually, for starters, I work in a telecom provider and I am entrusted with the obligation to configure network equipment, in order to eliminate the human factor, I need a script that edited the file along certain lines. For example, there is a file config.cfg/txt., I need to edit a few lines in this file, how to automate this? I imagine it like this, to make a special form for uploading the config, then a few lines in which you write the necessary data and they are ported to the previously loaded document.
In general, the question is how to implement it?

Answer 1

pythonworld.ru/tipy-dannyx-v-python/fajly-rabota-s...
https://www.ibm.com/developerworks/ru/library/l-py ...
pythonicway.com/python-fileio
?

Answer 2

file-put-contents
If php then this would be a more correct solution.