CodeIgniter installed

[living-lab-site.git] / system / helpers / array_helper.php

diff --git a/system/helpers/array_helper.php b/system/helpers/array_helper.php
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+<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 5.1.6 or newer
+ *
+ * @package            CodeIgniter
+ * @author             ExpressionEngine Dev Team
+ * @copyright  Copyright (c) 2008 - 2011, EllisLab, Inc.
+ * @license            http://codeigniter.com/user_guide/license.html
+ * @link               http://codeigniter.com
+ * @since              Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * CodeIgniter Array Helpers
+ *
+ * @package            CodeIgniter
+ * @subpackage Helpers
+ * @category   Helpers
+ * @author             ExpressionEngine Dev Team
+ * @link               http://codeigniter.com/user_guide/helpers/array_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * Element
+ *
+ * Lets you determine whether an array index is set and whether it has a value.
+ * If the element is empty it returns FALSE (or whatever you specify as the default value.)
+ *
+ * @access     public
+ * @param      string
+ * @param      array
+ * @param      mixed
+ * @return     mixed   depends on what the array contains
+ */
+if ( ! function_exists('element'))
+{
+       function element($item, $array, $default = FALSE)
+       {
+               if ( ! isset($array[$item]) OR $array[$item] == "")
+               {
+                       return $default;
+               }
+
+               return $array[$item];
+       }
+}
+
+// ------------------------------------------------------------------------
+
+/**
+ * Random Element - Takes an array as input and returns a random element
+ *
+ * @access     public
+ * @param      array
+ * @return     mixed   depends on what the array contains
+ */
+if ( ! function_exists('random_element'))
+{
+       function random_element($array)
+       {
+               if ( ! is_array($array))
+               {
+                       return $array;
+               }
+
+               return $array[array_rand($array)];
+       }
+}
+
+// --------------------------------------------------------------------
+
+/**
+ * Elements
+ *
+ * Returns only the array items specified.  Will return a default value if
+ * it is not set.
+ *
+ * @access     public
+ * @param      array
+ * @param      array
+ * @param      mixed
+ * @return     mixed   depends on what the array contains
+ */
+if ( ! function_exists('elements'))
+{
+       function elements($items, $array, $default = FALSE)
+       {
+               $return = array();
+               
+               if ( ! is_array($items))
+               {
+                       $items = array($items);
+               }
+               
+               foreach ($items as $item)
+               {
+                       if (isset($array[$item]))
+                       {
+                               $return[$item] = $array[$item];
+                       }
+                       else
+                       {
+                               $return[$item] = $default;
+                       }
+               }
+
+               return $return;
+       }
+}
+
+/* End of file array_helper.php */
+/* Location: ./system/helpers/array_helper.php */
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