PHP Code Get Random Value from Array Optional Filtered

PHP Code Function to Get a Random Value from Either Associative Array or Indexed Array and Optionally Filter the Array Prior to Grabbing Random Value

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/* -----------------------------------------------------------------
      [1] take array $arr and optionally filter the array to remove
          array items that dont match $arrFilterVals.
          
      [2] randomly grab and return one of the array item and
          the key of the randomly grabbed item
   --------------------------------------------------------------- */
  function randomFilteredArrVal(array $arr, array $arrFilterVals = [])
  {
      # If filter values are provided, use array_filter to filter the keys
      if (!empty($arrFilterVals)) {
          $arrKeys = array_filter(array_keys($arr), function($key) use ($arrFilterVals)
          {
              # Check if any of the filter values are present in the key
              foreach ($arrFilterVals as $filterVal) 
              {
                  if (strpos($key, $filterVal) !== false) 
                  {
                      return true;
                  }
              }
              return false;
          });
      } 
      else 
      {
          # If no filter values are provided, use all the keys
          $arrKeys = array_keys($arr);
      }
  
      # Return false if no matching keys found
      if (empty($arrKeys)) return false;
  
      # Randomly select one of the matching keys and return the corresponding value
      $randomKey = $arrKeys[array_rand($arrKeys)];
      
      return [$arr[$randomKey], $randomKey];
  }

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