validating in controller with preg_match "script"

hi guys,... can anyone help please,... 

how can I find if string contains "script" tag with preg_match,... ? 

I'm trying to avoid/aboard submission if data passed as <script>...</script> 

        $short_status = $this->params['form']['value'];

          $regex = '/^[<script>]$/i'; 

           if(preg_match($regex, $short_status))

          {

       die();

          }

    else

    {

     to process post and save to database,... 

thanks in advance, 

chris 

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