Get HTML List Of Array Keys

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        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;

Tags:
• Array
• php
• recursive

Comments

Snippets Manager replied on Mon, 2012/05/07 - 2:11pm

You could just use print("

");
print_r($_POST);
print("

"); or print("

");
var_dump($_POST);
print("

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

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