title: Use of undefined constant CURL_SSLVERSION_TLSv1 - assumed 'CURL_SSLVERSION_TLSv1'
body: <p>I am using php version 5.3.10
  and using curl version 7.22.0
  And when I am using this code:</p>
  
  <pre><code>$curlOptions[CURLOPT_URL] = $absUrl;
  
  $curlOptions[CURLOPT_RETURNTRANSFER] = true;
  $curlOptions[CURLOPT_CONNECTTIMEOUT] = 30;
  $curlOptions[CURLOPT_TIMEOUT] = 80;
  $curlOptions[CURLOPT_HTTPHEADER] = $headers;
  $curlOptions[CURLOPT_SSLVERSION] = CURL_SSLVERSION_TLSv1;
  </code></pre>
  
  <p>It gives the following error:</p>
  
  <blockquote>
    <p>Use of undefined constant CURL_SSLVERSION_TLSv1 - assumed 'CURL_SSLVERSION_TLSv1'</p>
  </blockquote>
  
  <p>Please help me to resolve this error. What CURL SSL version I should use for this PHP version?</p>