title: php foreach me crazy for concat key with value
body: <p>here is my <code>$bob</code> array :</p>
  
  <pre><code>Array
  (
      [n] =&gt; Array
          (
              [0] =&gt; 1
          )
  
      [m] =&gt; Array
          (
              [0] =&gt; 1
              [1] =&gt; 2
          )
  
      [l] =&gt; Array
          (
              [0] =&gt; 1
              [1] =&gt; 4
              [2] =&gt; 64
          )
  
      [o] =&gt; Array
          (
              [0] =&gt; 1
              [1] =&gt; 4
          )
        )
  </code></pre>
  
  <p>And i need to output in:</p>
  
  <ul>
  <li>n-1</li>
  <li>m-1 , m-2</li>
  <li>l-1 , l-4 , l-64</li>
  <li>o-1 , o-4</li>
  </ul>
  
  <p>I tryed some </p>
  
  <pre><code>foreach ($bob as $value) {
  
      foreach ($value as &amp;res)
  
      $value =  $bob . "-" . $res;
  }
  }
  </code></pre>
  
  <p>I guess its pity but i'm php newbe..
  All help will welcome,
  Jess</p>