title: Fetch only float value from following array
body: <p>I want to only get the value show below in float, how to do it.</p>
  
  <pre><code> array (size=1)
  'USD_PKR' =&gt; float 123.150375
  </code></pre>
  
  <p>But this output came after running following line.</p>
  
  <pre><code>var_dump($obj);
  </code></pre>
  
  <p>So I want to only get </p>
  
  <blockquote>
    <p>123.150375</p>
  </blockquote>
  
  <p>SO how to fetch only float value.</p>