title: How to compare two multidimentional array and return parent key in php
body: <p>for example i have two arrays</p>
  <pre><code>$first = array(52=&gt;array(10,24),55=&gt;array(5,25))
  $two = array(52=&gt;array(10,24),55=&gt;array(10,25))
  </code></pre>
  <p>in above two arrays how to return parent key if arrays values are not match , expected out put is</p>
  <pre><code>array(0=&gt;55) 
  </code></pre>