title: oci_fetch vs. oci_fetch_array
body: <p>When would it be advantageous to use <code>oci_fetch</code> over <code>oci_fetch_array</code>? <code>oci_fetch_array</code> returns the actual array, but <code>oci_fetch</code> just stores the fetched memory somewhere in its internal buffers. </p>
  
  <p>Are there any performance differences between the two I should know about? </p>