title: PHP check if arrays are identical?
body: <p>I'm looking for a way to check if two arrays are identical, for example</p>
  
  <pre><code>  $a = array(
      '1' =&gt; 12,
      '3' =&gt; 14,
      '6' =&gt; 11
  );
  $b = array(
      '1' =&gt; 12,
      '3' =&gt; 14,
      '6' =&gt; 11
  );
  </code></pre>
  
  <p>These two would be identical, but if a single value was changed, it would return false, I know I could write a function, but is there one already built? </p>