I before E (yuccamuffin.com)
<?php

    $words = file(’/usr/share/dict/words’);
    $words = array_map(’trim’, $words);
   
    // Ignore words with any punctuation
    $words = array_filter($words, ‘ctype_alpha’);
   
    foreach($words as $word)
    {
        // ignore proper nouns (they start with an uppercase letter)
        if(ctype_upper($word[0]))
      [...]