title: Any faster, simpler alternative to php preg_match
body: <p>I am using cakephp 1.3 and I have textarea where users submit articles. On submit, I want to look into the article for certain key words and and add respective tags to the article. </p>
  
  <p>I was thinking of preg_match, But preg_match pattern has to be string. So I would have to loop through an array(big). </p>
  
  <p>Is there a easier way to plug in the keywords array for the pattern. </p>
  
  <p>I appreciate all your help.</p>
  
  <p>Thanks. </p>