title: Make array keys insensitive in php
body: <p>Am using DB2 with my PHP. DB2 returns all column names in UPPERCASE. If I use db2_fetch_assoc, then the result would be like this</p>
  
  <pre><code>Array { [USERID] =&gt; 4 }
  </code></pre>
  
  <p>But in my php file, the array values assigned like this and its in camelstyle</p>
  
  <pre><code>$this-&gt;userId = $row['userId'];
  </code></pre>
  
  <p>So it throws the error <code>Error : Undefined index userId</code></p>
  
  <p>I can use array_change_key_case() function to convert the array to lowercase. But I have hundreds of files which get and assign the array values. </p>
  
  <p>Its not possible to change in all of my files. Also its linux machine.</p>
  
  <p>So is there any function available in php to disable the case sensitivity of array keys.</p>