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Get HTML list of Array Keys (See related posts)

Sometimes I find it useful having an overview about the keys an array has; PHP function Get_Array_Keys_UL will create an nested HTML Unordered List string of the keys of a given array. Makes best sense with literal keys, e.g. $_POST:
/**
 * Creates recursively a nested HTML UL of array keys.
 * @param array $array Array
 * @return string Nested UL string
 */
function Get_Array_Keys_UL($array=array()) {
 $recursion=__FUNCTION__;
 if (empty($array)) return '';
 $out='<ul>'."\n";
 foreach ($array as $key => $elem)
   $out .= '<li>'.$key.$recursion($elem).'</li>'."\n";
 $out .= '</ul>'."\n";  
 return $out;
}


Use like this:
$ul=Get_Array_Keys_UL($_POST);
echo $ul;
to php recursive array by drwitt on Wed Apr 13 14:04:04 -0400 2005

Comments on this post

joshduck posts on Sep 17, 2005 at 03:38
You could just use 
print("<pre>");
print_r($_POST);
print("</pre>");

or

print("<pre>");
var_dump($_POST);
print("</pre>");


A good tip I've picked up is to use print* for debug statements and echo for other output.

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