title: REGEX preg_split()
body: <p>I have an array full of strings that may contain one or more underscores, dashes, and periods.  I want to split the into the characters separated by the  underscores, dashes, and periods. So far I've had success with the underscores and dashes but not the periods. </p>
  
  <p>This works:</p>
  
  <pre><code>$family02 = preg_split('/_|-/', $row['family'], -1, PREG_SPLIT_NO_EMPTY);
  </code></pre>
  
  <p>When I try...</p>
  
  <pre><code>'/_|-./'
  '/_|-\./'
  '/_|-|./'
  </code></pre>
  
  <p>...or ordering the delimiters differently, I get splits on 1 of 3 or 2 of 3, or empty arrays.</p>
  
  <p>Thank you for any help or good REGEX links.</p>
  
  <p>Rd</p>