Hi, I'm doing a script that extracts words(only once, unique) from multiple text files (all in a folder).
I've used regexp before, but I forgot the syntax for the patern.
So far for extraction from one file I have:
<?php
$file = file_get_contents ('1.txt');
$patern= '???';
$sp = preg_split('/ /', preg_replace($patern,' ',$file));
$sp = array_unique($sp);
What do I write at the patern? I need to replace all other characters(like :, "- ',' . )( "�' ) except letters, with spaces so I can later extract everything except space and write it down in another txt file.