title: How does multisorting work in php7 with an array containing mixed datatypes?
body: <p>So I wrote the following code:</p>
  
  <pre><code>$a= array( array("10", 11,100, 100, ),
         array(1,2,"2", 3,));
  
  array_multisort($a[1],SORT_ASC, SORT_STRING);
  </code></pre>
  
  <p>My sorted array is : </p>
  
  <pre><code>"10", 11, 100, 100
  1 , "2", 2 ,3
  </code></pre>
  
  <p>On what basis is the mixed sorting happening?</p>