title: Delimiter must not be alphanumeric or backslash and preg_match
body: <p>I have this code :</p>
  
  <pre><code>$string1 = "My name is 'Kate' and im fine"; 
  $pattern = "My name is '(.*)' and im fine"; 
  preg_match($pattern , $string1, $matches);
  echo $matches[1];
  </code></pre>
  
  <p>and when im run it returns this error:</p>
  
  <blockquote>
    <p>Warning: preg_match() [function.preg-match]: Delimiter must not be alphanumeric or backslash</p>
  </blockquote>