title: PHP Array Search Return Multiple Keys
body: <p>I'm trying to search an array and return multiple keys</p>
  
  <pre><code>&lt;?php
  $a=array("a"=&gt;"1","b"=&gt;"2","c"=&gt;"2");
  echo array_search("2",$a);
  ?&gt;
  </code></pre>
  
  <p>With the code above it only returns b, how can I get I to return b and c?</p>