Imported, Exploded Word List Doesn't Compare Properly - php

Question

My original test implementation consisted of building an array of "ignore words" with the following code:
$ignoreList = array("test1", "test2", "test3");
Later on, I test for individual words in the $ignoreList:
if(in_array($word, $ignoreList)){
} else{
$words[$word] = $words[$word] + 1;
}
This code works perfectly - upon later echoing my word list, no words on the $ignoreList show up. I refactored to make it easier to add or remove words:
//Import ignore list
$ignore_raw = file_get_contents("includes/ignore.txt");
$ignoreList = explode("\n", $ignore_raw);
ignore.txt is a plain text file with each item on its own line, no spaces. The import and explode seems to be working, because a print_r statement on $ignoreList results in:
Array ( [0] => a [1] => and [2] => are [3] => as [4] => for [5] => in [6] => is [7] => more [8] => of [9] => than [10] => that [11] => the [12] => to [13] => with )
The comparison code, however, stops working properly, and words on the ignore list show up once again in my final results. Any ideas what's wrong?

Answer 1

Your ignore.txt file may have \r\n line endings, and your words actually have a trailing \r.
Try that:
$ignoreList = array_map('trim', file("includes/ignore.txt"));
BTW your code may be refactored like that:
$words = array_diff($words, $ignoreList); // removes ignored words
$words = array_count_values($words); // count words