<?php

$filename = "english-vulgarities.txt";
$handle = fopen($filename, "r");
$text_file = fread($handle, filesize($filename));
fclose($handle);
#echo($text_file);
$pattern='/(    .+?\n)/';
$subject=$text_file;
preg_match_all($pattern, $subject, $matches);
//matches Orders results so that $matches[0] is an array of full pattern matches, $matches[1] is an array of strings matched by the first parenthesized subpattern, and so on. 
$string_comma_separated = "";
$bad_words = array();
foreach($matches[1] as $match)  {
	#print_r( substr( $match,4,strlen($match)-5)."\n");
	$string_comma_separated=$string_comma_separated.substr( $match,4,strlen($match)-5).",";
	$bad_words[]=substr( $match,4,strlen($match)-5);
}
$string_comma_separated = substr($string_comma_separated , 0, strlen($string_comma_separated)-1);

$handle = fopen('english-vulgarities-swear-words.txt', "w");
fwrite($handle,$string_comma_separated );
fclose($handle);


$filename = "popular-words.txt";
$handle = fopen($filename, "r");
$dictionary = fread($handle, filesize($filename));
fclose($handle);
$words = explode("\n", $dictionary);

foreach ($words as $word) {
	foreach ($bad_words as $bad_word) {
		#echo "<".$word."><".$bad_word.">";
		if($word == $bad_word) {
			echo $word."\n";
		}
	}
}

?>