title: foreach get one value
body: <p>When I do var_dump($punkty); 
  I got something like this:</p>
  
  <pre><code>array(1) 
  { 
  [0]=&gt; array(4) 
      { 
      ["id"]=&gt; string(2) "28" 
      ["mapa"]=&gt; string(97) "a:3s:3:"lat";s:17:"49.21103723075132";s:3:"lng";s:18:"22.330280542373657";s:4:"zoom";s:2:"17";}" 
      ["miasto"]=&gt; string(5) "Cisna" 
      ["nazwa_obiektu"]=&gt; string(44) "Cisna - noclegi u Mirosławy w Bieszczadach" 
      }
  } 
  </code></pre>
  
  <p>When i do: </p>
  
  <pre><code>foreach ($punkty['mapa'] as $item)
          {
          echo $item;
          }
  </code></pre>
  
  <p>I get </p>
  
  <pre><code>Invalid argument supplied for foreach() 
  </code></pre>
  
  <p>How to solve it?</p>