title: PHP - array_diff giving Array to string conversion errors
body: <p>I have an array that looks like this..</p>
  
  <pre><code>$breadcrumbs = Array
  (
      [0] =&gt; Array
          (
              [0] =&gt; Home
              [1] =&gt; homepage.html
          )
  
      [1] =&gt; Array
          (
              [0] =&gt; About
              [1] =&gt; aboutpage.html
          )
  
      [2] =&gt; Array
          (
              [0] =&gt; Contact
              [1] =&gt; contactpage.html
          )
  
  )
  
  $remove = Array
  (
      [0] =&gt; Home
  )
  </code></pre>
  
  <p>I am trying to use array_diff to remove the Home entry from $breadcrumbs like this...</p>
  
  <pre><code>return ( array_diff($breadcrumbs, $remove) );
  </code></pre>
  
  <p>It is not working and giving me Array to string conversion errors, where am I going wrong?</p>