Hello. I have two text files. Text1.txt and Text2.txt. I am needing to remove an lines found in Text1.txt from Text2.txt. That was probably confusing, so let me give an example.

Let's say Text1.txt has this:
1
2
3

And Text2.txt has this:
2
3
4

The final result would be:

Text1.txt:
1
2
3

Text2.txt:
4

If this doesn't make sense, please let me know.

Thank you in advance,

Resentful

Member Avatar

diafol

One way to do this is to place both textfile lines into an array using file().

e.g. $t1 = file('text1.txt'); then you need to find the items in $t2 that don't exist in $t1:

use

$result = array_diff($t2,$t1);

Then implode the $result array with a '\n' and write back to text2.txt using something like file_put_contents()

commented: Perfect example +2