title: How can I remove a key and its value from an associative array?
body: <p>Given an associative array:</p>
  
  <pre><code>array("key1" =&gt; "value1", "key2" =&gt; "value2", ...)
  </code></pre>
  
  <p>How would I go about removing a certain key-value pair, given the key?</p>