title: array_unique doesn't seem to be working
body: <p>After I use <code>array_unique</code> on an array, when I <code>var_dump</code> the array, it still has the same content, with duplicates:</p>
  
  <pre><code>array(21) { 
  [0]=&gt; string(10) "tricou_CRS" 
  [1]=&gt; string(10) "tricou_CRM" 
  [2]=&gt; string(11) "tricou_CRXL" 
  [3]=&gt; string(10) "tricou_CBM" 
  [4]=&gt; string(10) "tricou_CBL" 
  [5]=&gt; string(10) "tricou_CWS" 
  [6]=&gt; string(11) "tricou_CWXL" 
  [7]=&gt; string(10) "tricou_CRS" 
  [8]=&gt; string(10) "tricou_CRM" 
  [9]=&gt; string(11) "tricou_CRXL" 
  [10]=&gt; string(10) "tricou_CBM" 
  [11]=&gt; string(10) "tricou_CBL" 
  [12]=&gt; string(10) "tricou_CWS" 
  [13]=&gt; string(11) "tricou_CWXL" 
  [14]=&gt; string(10) "tricou_CRS" 
  [15]=&gt; string(10) "tricou_CRM" 
  [16]=&gt; string(11) "tricou_CRXL" 
  [17]=&gt; string(10) "tricou_CBM" 
  [18]=&gt; string(10) "tricou_CBL" 
  [19]=&gt; string(10) "tricou_CWS" 
  [20]=&gt; string(11) "tricou_CWXL" }
  </code></pre>
  
  <p>Which obviously has some duplicates. Now, there's not much code that could help, really, because it's just <code>array_unique($myarr);var_dump($myarr);</code>.
  So, what am I missing there? Shouldn't array_unique remove the duplicates? Both the type and the content is the same in many of the array's positions.</p>