function toggle(obj) {
	var el = document.getElementById(obj);
	if ( el.style.display != 'none' ) {
		el.style.display = 'none';
	} else {
		el.style.display = '';
	}
}

<?php
/*
 Requires PHP5, uses built-in DOM extension.
 To be used in PHP4 scripts using DOMXML extension.
 Allows PHP4/DOMXML scripts to run on PHP5/DOM.
 (Requires PHP5/XSL extension for domxml_xslt functions)

 Typical use:
 {
  if (version_compare(PHP_VERSION,'5','>='))
   require_once('domxml-php4-to-php5.php');
 }

 Version 1.12, 2006-10-11, http://alexandre.alapetite.net/doc-alex/domxml-php4-php5/

 ------------------------------------------------------------------
 Written by Alexandre Alapetite, http://alexandre.alapetite.net/cv/

 Copyright 2004-2006, Licence: Creative Commons "Attribution-ShareAlike 2.0 France" BY-SA (FR),
 http://creativecommons.org/licenses/by-sa/2.0/fr/
 http://alexandre.alapetite.net/divers/apropos/#by-sa
 - Attribution. You must give the original author credit
 - Share Alike. If you alter, transform, or build upon this work,
   you may distribute the resulting work only under a license identical to this one
   (Can be included in GPL/LGPL projects)
 - The French law is authoritative
 - Any of these conditions can be waived if you get permission from Alexandre Alapetite
 - Please send to Alexandre Alapetite the modifications you make,
   in order to improve this file for the benefit of everybody

 If you want to distribute this code, please do it as a link to:
 http://alexandre.alapetite.net/doc-alex/domxml-php4-php5/
*/

function domxml_new_doc($version) {return new php4DOMDocument('');}
function domxml_new_xmldoc($version) {return new php4DOMDocument('');}
function domxml_open_file($filename) {return new php4DOMDocument($filename);}
function domxml_open_mem($str)
{
 $dom=new php4DOMDocument('');
 $dom->myDOMNode->loadXML($str);
 return $dom;
}
function html_doc($html_doc,$from_file=false)
{
 $dom=new php4DOMDocument('');
 if ($from_file) $dom->myDOMNode->loadHTMLFile($html_doc);
 else $dom->myDOMNode->loadHTML($html_doc);
 return $dom;
}
function html_doc_file($filename) {return html_doc($filename,true);}
function xmldoc($str) {return domxml_open_mem($str);}
function xmldocfile($filename) {return new php4DOMDocument($filename);}
function xpath_eval($xpath_context,$eval_str,$contextnode=null) {return $xpath_context->xpath_eval($eval_str,$contextnode);}
function xpath_new_context($dom_document) {return new php4DOMXPath($dom_document);}
function xpath_register_ns($xpath_context,$prefix,$namespaceURI) {return $xpath_context->myDOMXPath->registerNamespace($prefix,$namespaceURI);}

class php4DOMAttr extends php4DOMNode
{
 function name() {return $this->myDOMNode->name;}
 function set_value($content) {return $this->myDOMNode->value=$content;}
 function specified() {return $this->myDOMNode->specified;}
 function value() {return $this->myDOMNode->value;}
}

class php4DOMDocument extends php4DOMNode
{
 function php4DOMDocument($filename='')
 {
  $this->myDOMNode=new DOMDocument();
  $this->myOwnerDocument=$this;
  if ($filename!='') $this->myDOMNode->load($filename);
 }
 function add_root($name)
 {
  if ($this->myDOMNode->hasChildNodes()) $this->myDOMNode->removeChild($this->myDOMNode->firstChild);
  return new php4DOMElement($this->myDOMNode->appendChild($this->myDOMNode->createElement($name)),$this->myOwnerDocument);
 }
 function create_attribute($name,$value)
 {
  $myAttr=$this->myDOMNode->createAttribute($name);
  $myAttr->value=$value;
  return new php4DOMAttr($myAttr,$this);
 }
 function create_cdata_section($content) {return new php4DOMNode($this->myDOMNode->createCDATASection($content),$this);}
 function create_comment($data) {return new php4DOMNode($this->myDOMNode->createComment($data),$this);}
 function create_element($name) {return new php4DOMElement($this->myDOMNode->createElement($name),$this);}
 function create_element_ns($uri,$name,$prefix=null)
 {
  if ($prefix==null) $prefix=$this->myDOMNode->lookupPrefix($uri);
  if ($prefix==null) $prefix='a'.sprintf('%u',crc32($uri));
  return new php4DOMElement($this->myDOMNode->createElementNS($uri,$prefix.':'.$name),$this);
 }
 function create_text_node($content) {return new php4DOMText($this->myDOMNode->createTextNode($content),$this);}
 function document_element() {return parent::_newDOMElement($this->myDOMNode->documentElement,$this);}
 function dump_file($filename,$compressionmode=false,$format=false)
 {
  $format0=$this->myDOMNode->formatOutput;
  $this->myDOMNode->formatOutput=$format;
  $res=$this->myDOMNode->save($filename);
  $this->myDOMNode->formatOutput=$format0;
  return $res;
 }
 function dump_mem($format=false,$encoding=false)
 {
  $format0=$this->myDOMNode->formatOutput;
  $this->myDOMNode->formatOutput=$format;
  $encoding0=$this->myDOMNode->encoding;
  if ($encoding) $this->myDOMNode->encoding=$encoding;
  $dump=$this->myDOMNode->saveXML();
  $this->myDOMNode->formatOutput=$format0;
  if ($encoding) $this->myDOMNode->encoding= $encoding0=='' ? 'UTF-8' : $encoding0; //UTF-8 is XML default encoding
  return $dump;
 }
 function free()
 {
  if ($this->myDOMNode->hasChildNodes()) $this->myDOMNode->removeChild($this->myDOMNode->firstChild);
  $this->myDOMNode=null;
  $this->myOwnerDocument=null;
 }
 function get_element_by_id($id) {return parent::_newDOMElement($this->myDOMNode->getElementById($id),$this);}
 function get_elements_by_tagname($name)
 {
  $myDOMNodeList=$this->myDOMNode->getElementsByTagName($name);
  $nodeSet=array();
  $i=0;
  if (isset($myDOMNodeList))
   while ($node=$myDOMNodeList->item($i++)) $nodeSet[]=new php4DOMElement($node,$this);
  return $nodeSet;
 }
 function html_dump_mem() {return $this->myDOMNode->saveHTML();}
 function root() {return parent::_newDOMElement($this->myDOMNode->documentElement,$this);}
 function xpath_new_context() {return new php4DOMXPath($this);}
}

class php4DOMElement extends php4DOMNode
{
 function add_namespace($uri,$prefix)
 {
  if ($this->myDOMNode->hasAttributeNS('http://www.w3.org/2000/xmlns/',$prefix)) return false;
  else
  {
   $this->myDOMNode->setAttributeNS('http://www.w3.org/2000/xmlns/','xmlns:'.$prefix,$uri); //By Daniel Walker on 2006-09-08
   return true;
  }
 }
 function get_attribute($name) {return $this->myDOMNode->getAttribute($name);}
 function get_attribute_node($name) {return parent::_newDOMElement($this->myDOMNode->getAttributeNode($name),$this->myOwnerDocument);}
 function get_elements_by_tagname($name)
 {
  $myDOMNodeList=$this->myDOMNode->getElementsByTagName($name);
  $nodeSet=array();
  $i=0;
  if (isset($myDOMNodeList))
   while ($node=$myDOMNodeList->item($i++)) $nodeSet[]=new php4DOMElement($node,$this->myOwnerDocument);
  return $nodeSet;
 }
 function has_attribute($name) {return $this->myDOMNode->hasAttribute($name);}
 function remove_attribute($name) {return $this->myDOMNode->removeAttribute($name);}
 function set_attribute($name,$value)
 {
  //return $this->myDOMNode->setAttribute($name,$value); //Does not return a DomAttr
  $myAttr=$this->myDOMNode->ownerDocument->createAttribute($name);
  $myAttr->value=$value;
  $this->myDOMNode->setAttributeNode($myAttr);
  return new php4DOMAttr($myAttr,$this->myOwnerDocument);
 }
 function set_attribute_node($attr)
 {
  $this->myDOMNode->setAttributeNode($this->_importNode($attr));
  return $attr;
 }
 function set_name($name)
 {
  if ($this->myDOMNode->prefix=='') $newNode=$this->myDOMNode->ownerDocument->createElement($name);
  else $newNode=$this->myDOMNode->ownerDocument->createElementNS($this->myDOMNode->namespaceURI,$this->myDOMNode->prefix.':'.$name);
  $myDOMNodeList=$this->myDOMNode->attributes;
  $i=0;
  if (isset($myDOMNodeList))
   while ($node=$myDOMNodeList->item($i++))
    if ($node->namespaceURI=='') $newNode->setAttribute($node->name,$node->value);
    else $newNode->setAttributeNS($node->namespaceURI,$node->nodeName,$node->value);
  $myDOMNodeList=$this->myDOMNode->childNodes;
  if (isset($myDOMNodeList))
   while ($node=$myDOMNodeList->item(0)) $newNode->appendChild($node);
  $this->myDOMNode->parentNode->replaceChild($newNode,$this->myDOMNode);
  $this->myDOMNode=$newNode;
  return true;
 }
 function tagname() {return $this->myDOMNode->tagName;}
}

class php4DOMNode
{
 public $myDOMNode;
 public $myOwnerDocument;
 function php4DOMNode($aDomNode,$aOwnerDocument)
 {
  $this->myDOMNode=$aDomNode;
  $this->myOwnerDocument=$aOwnerDocument;
 }
 function __get($name)
 {
  switch ($name)
  {
   case 'type': return $this->myDOMNode->nodeType;
   case 'tagname': return $this->myDOMNode->tagName;
   case 'content': return $this->myDOMNode->textContent;
   case 'name': return $this->myDOMNode->name;
   case 'value': return $this->myDOMNode->value;
   default:
    $myErrors=debug_backtrace();
    trigger_error('Undefined property: '.get_class($this).'::$'.$name.' ['.$myErrors[0]['file'].':'.$myErrors[0]['line'].']',E_USER_NOTICE);
    return false;
  }
 }
 function add_child($newnode) {return append_child($newnode);}
 function add_namespace($uri,$prefix) {return false;}
 function append_child($newnode) {return self::_newDOMElement($this->myDOMNode->appendChild($this->_importNode($newnode)),$this->myOwnerDocument);}
 function append_sibling($newnode) {return self::_newDOMElement($this->myDOMNode->parentNode->appendChild($this->_importNode($newnode)),$this->myOwnerDocument);}
 function attributes()
 {
  $myDOMNodeList=$this->myDOMNode->attributes;
  $nodeSet=array();
  $i=0;
  if (isset($myDOMNodeList))
   while ($node=$myDOMNodeList->item($i++)) $nodeSet[]=new php4DOMAttr($node,$this->myOwnerDocument);
  return $nodeSet;
 }
 function child_nodes()
 {
  $myDOMNodeList=$this->myDOMNode->childNodes;
  $nodeSet=array();
  $i=0;
  if (isset($myDOMNodeList))
   while ($node=$myDOMNodeList->item($i++)) $nodeSet[]=self::_newDOMElement($node,$this->myOwnerDocument);
  return $nodeSet;
 }
 function children() {return $this->child_nodes();}
 function clone_node($deep=false) {return self::_newDOMElement($this->myDOMNode->cloneNode($deep),$this->myOwnerDocument);}
 //dump_node($node) should only be called on php4DOMDocument
 function dump_node($node=null) {return $node==null ? $this->myOwnerDocument->myDOMNode->saveXML($this->myDOMNode) : $this->myOwnerDocument->myDOMNode->saveXML($node->myDOMNode);}
 function first_child() {return self::_newDOMElement($this->myDOMNode->firstChild,$this->myOwnerDocument);}
 function get_content() {return $this->myDOMNode->textContent;}
 function has_attributes() {return $this->myDOMNode->hasAttributes();}
 function has_child_nodes() {return $this->myDOMNode->hasChildNodes();}
 function insert_before($newnode,$refnode) {return self::_newDOMElement($this->myDOMNode->insertBefore($this->_importNode($newnode),$refnode->myDOMNode),$this->myOwnerDocument);}
 function is_blank_node() {return ($this->myDOMNode->nodeType==XML_TEXT_NODE)&&preg_match('%^\s*$%',$this->myDOMNode->nodeValue);}
 function last_child() {return self::_newDOMElement($this->myDOMNode->lastChild,$this->myOwnerDocument);}
 function new_child($name,$content)
 {
  $mySubNode=$this->myDOMNode->ownerDocument->createElement($name);
  $mySubNode->appendChild($this->myDOMNode->ownerDocument->createTextNode(html_entity_decode($content,ENT_QUOTES)));
  $this->myDOMNode->appendChild($mySubNode);
  return new php4DOMElement($mySubNode,$this->myOwnerDocument);
 }
 function next_sibling() {return self::_newDOMElement($this->myDOMNode->nextSibling,$this->myOwnerDocument);}
 function node_name() {return ($this->myDOMNode->nodeType==XML_ELEMENT_NODE) ? $this->myDOMNode->localName : $this->myDOMNode->nodeName;} //Avoid namespace prefix for DOMElement
 function node_type() {return $this->myDOMNode->nodeType;}
 function node_value() {return $this->myDOMNode->nodeValue;}
 function owner_document() {return $this->myOwnerDocument;}
 function parent_node() {return self::_newDOMElement($this->myDOMNode->parentNode,$this->myOwnerDocument);}
 function prefix() {return $this->myDOMNode->prefix;}
 function previous_sibling() {return self::_newDOMElement($this->myDOMNode->previousSibling,$this->myOwnerDocument);}
 function remove_child($oldchild) {return self::_newDOMElement($this->myDOMNode->removeChild($oldchild->myDOMNode),$this->myOwnerDocument);}
 function replace_child($oldnode,$newnode) {return self::_newDOMElement($this->myDOMNode->replaceChild($oldnode->myDOMNode,$this->_importNode($newnode)),$this->myOwnerDocument);}
 function set_content($text) {return $this->myDOMNode->appendChild($this->myDOMNode->ownerDocument->createTextNode($text));}
 //function set_name($name) {return $this->myOwnerDocument->renameNode($this->myDOMNode,$this->myDOMNode->namespaceURI,$name);}
 function set_namespace($uri,$prefix=null)
 {//Contributions by Daniel Walker on 2006-09-08
  $nsprefix=$this->myDOMNode->lookupPrefix($uri);
  if ($nsprefix==null)
  {
   $nsprefix= $prefix==null ? $nsprefix='a'.sprintf('%u',crc32($uri)) : $prefix;
   if ($this->myDOMNode->nodeType==XML_ATTRIBUTE_NODE)
   {
    if (($prefix!=null)&&$this->myDOMNode->ownerElement->hasAttributeNS('http://www.w3.org/2000/xmlns/',$nsprefix)&&
        ($this->myDOMNode->ownerElement->getAttributeNS('http://www.w3.org/2000/xmlns/',$nsprefix)!=$uri))
    {//Remove namespace
     $parent=$this->myDOMNode->ownerElement;
     $parent->removeAttributeNode($this->myDOMNode);
     $parent->setAttribute($this->myDOMNode->localName,$this->myDOMNode->nodeValue);
     $this->myDOMNode=$parent->getAttributeNode($this->myDOMNode->localName);
     return;
    }
    $this->myDOMNode->ownerElement->setAttributeNS('http://www.w3.org/2000/xmlns/','xmlns:'.$nsprefix,$uri);
   }
  }
  if ($this->myDOMNode->nodeType==XML_ATTRIBUTE_NODE)
  {
   $parent=$this->myDOMNode->ownerElement;
   $parent->removeAttributeNode($this->myDOMNode);
   $parent->setAttributeNS($uri,$nsprefix.':'.$this->myDOMNode->localName,$this->myDOMNode->nodeValue);
   $this->myDOMNode=$parent->getAttributeNodeNS($uri,$this->myDOMNode->localName);
  }
  elseif ($this->myDOMNode->nodeType==XML_ELEMENT_NODE)
  {
   $NewNode=$this->myDOMNode->ownerDocument->createElementNS($uri,$nsprefix.':'.$this->myDOMNode->localName);
   foreach ($this->myDOMNode->attributes as $n) $NewNode->appendChild($n->cloneNode(true));
   foreach ($this->myDOMNode->childNodes as $n) $NewNode->appendChild($n->cloneNode(true));
   $xpath=new DOMXPath($this->myDOMNode->ownerDocument);
   $myDOMNodeList=$xpath->query('namespace::*[name()!="xml"]',$this->myDOMNode); //Add old namespaces
   foreach ($myDOMNodeList as $n) $NewNode->setAttributeNS('http://www.w3.org/2000/xmlns/',$n->nodeName,$n->nodeValue); 
   $this->myDOMNode->parentNode->replaceChild($NewNode,$this->myDOMNode);
   $this->myDOMNode=$NewNode;
  }
 }
 protected function _importNode($newnode) {return $this->myOwnerDocument===$newnode->myOwnerDocument ? $newnode->myDOMNode : $this->myOwnerDocument->myDOMNode->importNode($newnode->myDOMNode,true);} //To import DOMNode from another DOMDocument
 static function _newDOMElement($aDOMNode,$aOwnerDocument)
 {//Check the PHP5 DOMNode before creating a new associated PHP4 DOMNode wrapper
  if ($aDOMNode==null) return null;
  switch ($aDOMNode->nodeType)
  {
   case XML_ELEMENT_NODE: return new php4DOMElement($aDOMNode,$aOwnerDocument);
   case XML_TEXT_NODE: return new php4DOMText($aDOMNode,$aOwnerDocument);
   case XML_ATTRIBUTE_NODE: return new php4DOMAttr($aDOMNode,$aOwnerDocument);
   default: return new php4DOMNode($aDOMNode,$aOwnerDocument);
  }
 }
}

class php4DOMText extends php4DOMNode
{
 function __get($name)
 {
  if ($name=='tagname') return '#text';
  else return parent::__get($name);
 }
 function tagname() {return '#text';}
}

if (!defined('XPATH_NODESET'))
{
 define('XPATH_UNDEFINED',0);
 define('XPATH_NODESET',1);
 /*define('XPATH_BOOLEAN',2);
 define('XPATH_NUMBER',3);
 define('XPATH_STRING',4);
 define('XPATH_POINT',5);
 define('XPATH_RANGE',6);
 define('XPATH_LOCATIONSET',7);
 define('XPATH_USERS',8);
 define('XPATH_XSLT_TREE',9);*/
}

class php4DOMNodelist
{//TODO: To be updated for PHP/5.1 to allow XPath boolean expressions etc. DOMXPath->evaluate()
 private $myDOMNodelist;
 public $nodeset;
 public $type;
 function php4DOMNodelist($aDOMNodelist,$aOwnerDocument)
 {
  $this->myDOMNodelist=$aDOMNodelist;
  $this->nodeset=array();
  $i=0;
  if (isset($this->myDOMNodelist))
  {
   $this->type=XPATH_NODESET;
   while ($node=$this->myDOMNodelist->item($i++)) $this->nodeset[]=php4DOMNode::_newDOMElement($node,$aOwnerDocument);
  }
  else $this->type=XPATH_UNDEFINED;
 }
}

class php4DOMXPath
{
 public $myDOMXPath;
 private $myOwnerDocument;
 function php4DOMXPath($dom_document)
 {
  //TODO: If $dom_document is a DomElement, make that default $contextnode and modify XPath. Ex: '/test'
  $this->myOwnerDocument=$dom_document->myOwnerDocument;
  $this->myDOMXPath=new DOMXPath($this->myOwnerDocument->myDOMNode);
 }
 function xpath_eval($eval_str,$contextnode=null) {return isset($contextnode) ? new php4DOMNodelist($this->myDOMXPath->query($eval_str,$contextnode->myDOMNode),$this->myOwnerDocument) : new php4DOMNodelist($this->myDOMXPath->query($eval_str),$this->myOwnerDocument);}
 function xpath_register_ns($prefix,$namespaceURI) {return $this->myDOMXPath->registerNamespace($prefix,$namespaceURI);}
}

if (extension_loaded('xsl'))
{//See also: http://alexandre.alapetite.net/doc-alex/xslt-php4-php5/
 function domxml_xslt_stylesheet($xslstring) {return new php4DomXsltStylesheet(DOMDocument::loadXML($xslstring));}
 function domxml_xslt_stylesheet_doc($dom_document) {return new php4DomXsltStylesheet($dom_document);}
 function domxml_xslt_stylesheet_file($xslfile) {return new php4DomXsltStylesheet(DOMDocument::load($xslfile));}
 class php4DomXsltStylesheet
 {
  private $myxsltProcessor;
  function php4DomXsltStylesheet($dom_document)
  {
   $this->myxsltProcessor=new xsltProcessor();
   $this->myxsltProcessor->importStyleSheet($dom_document);
  }
  function process($dom_document,$xslt_parameters=array(),$param_is_xpath=false)
  {
   foreach ($xslt_parameters as $param=>$value) $this->myxsltProcessor->setParameter('',$param,$value);
   $myphp4DOMDocument=new php4DOMDocument();
   $myphp4DOMDocument->myDOMNode=$this->myxsltProcessor->transformToDoc($dom_document->myDOMNode);
   return $myphp4DOMDocument;
  }
  function result_dump_file($dom_document,$filename)
  {
   $html=$dom_document->myDOMNode->saveHTML();
   file_put_contents($filename,$html);
   return $html;
  }
  function result_dump_mem($dom_document) {return $dom_document->myDOMNode->saveHTML();}
 }
}
?>

<?php
function include_dir($path,$read=false) {
    //separador de directorios
    $s = '/';
    //vemos si es la primera vez que usamos la funcion
    if(!$read) {
        //obtenemos los dos ultimos caracteres
        $tree = substr($path,-2);
        if($tree=='.*') {
            //eliminamos el asterisco y activamos la recursividad
            $path = preg_replace('!\.\*$!','',$path);
            $read = true;
        }
        //obtenemos el document_root del archivo en caso de usarse
        $path = preg_replace('!^root\.!',$_SERVER['DOCUMENT_ROOT'].$s,$path);
        //cambiamos el punto por el separador
        $path = str_replace('.',$s,$path);
    }
    //abrimos el directorio
    if ($handle = opendir($path)) {
        while (false !== ($file = readdir($handle))) {
            if ($file != "." && $file != "..") {
                //si es un directorio lo recorremos en caso de activar la recursividad
                if(is_dir($path.$s.$file) and $read) {
                    include_dir($path.$s.$file,true);
                } else {
                    $ext = substr(strtolower($file),-3);
                    if($ext == 'php') @include_once($path.$s.$file);
                }
            }
        }
        //cerramos el directorio
        closedir($handle);
    }
}

//ejemplos
//incluir el directorio "lib"
include_dir('lib');
//incluir todos los archivos que contenga "lib" esten en ese directorio o dentro de otros
include_dir('lib.*');
//incluir el directorio "lib" con ruta absoluta
include_dir('root.lib');
//incluir todos los archivos que contenga "lib" esten en ese directorio o dentro de otros
include_dir('root.lib.*');

?>

UPDATE livre_fr SET prix=prix_editeur*0.7 where isbn= '2000';

insert INTO reponse_qcm (prenom,codepostal,adresse,pays,id,nom,email,rep_txt,num_qcm) VALUES ('$ce','$nombre','$adresse','$tel','$resp','$nom','$mail','$quest',176);

function getPuntosRut( $rut ){
	$rutTmp = explode( "-", $rut );
	return number_format( $rutTmp[0], 0, "", ".") . '-' . $rutTmp[1];
}

echo getPuntosRut('12345678-9');

/*
In: $nacimiento = DD-MM-YYYY
return: edad
*/

function getEdad( $nacimiento ){
	if( empty($nacimiento) || substr_count($nacimiento,'-') != 2 ) return '0';
    list( $dia, $mes, $anio) = explode( "-", date("d-m-Y") );
    list( $anio_nac, $mes_nac, $dia_nac  ) = explode( "-", $nacimiento );
	$anio_nac = soloNum($anio_nac);
	$mes_nac = soloNum($mes_nac);
	$dia_nac = soloNum($dia_nac);
	if( empty($anio_nac) || empty($mes_nac) || empty($dia_nac)  ) return '-1';
	if( ! checkdate( $mes_nac, $dia_nac, $anio_nac ) ) return '-1';
    if( $mes_nac > $mes ){
        $return = $anio - $anio_nac - 1;
    }else{
        if( $mes == $mes_nac && $dia_nac > $dia ){
            $return = $anio - $anio_nac - 1; 
        }else{
            $return= $anio - $anio_nac;
        }
    }
    return $return;
}

/**
 * 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;
}


$ul=Get_Array_Keys_UL($_POST);
echo $ul;

function String_Begins_With($needle, $haystack {
 return (substr($haystack, 0, strlen($needle))==$needle);
}

#Simple
if (isset($HTTP_GET_VARS) and ! empty ( $HTTP_GET_VARS ) ) {
    $_GET = $HTTP_GET_VARS;
} 

if ( isset( $HTTP_SERVER_VARS ) and ! empty( $HTTP_SERVER_VARS ) ) {
    $_SERVER = $HTTP_SERVER_VARS;
}

<?php
//created by me...

class apple {
    // connect to, and select the database
    private function connectDB(){
    $dbconnect = mysql_connect('localhost', 'root','', 'form')
    or die('no connection');
    mysql_select_db("form");
    echo 'connected';
    }

    // get table names
    function gettables(){
        $this->connectDB();
        $query = 'SHOW TABLES from form';
        $result = mysql_query($query);
        $num_rows = mysql_num_rows($result);
        for ($i = 0; $i < $num_rows; $i++) {
           echo "<p>Table: ", mysql_tablename($result, $i), "</p>\n";
    }
}

    // list articles
    function goober() {
        $this->connectDB();
        $result = mysql_query("SELECT * FROM article");
        while ($row = mysql_fetch_array($result, MYSQL_BOTH)) {
            print("<h2>".$row['title']."</h2>");
            print($row["content"]."<br />");
          }
    }

    // insert article
    function insertArticle(){
        $sql = mysql_query("INSERT INTO article (title, content) VALUES('class1', 'tree1')")
        or die;
    }

    // disconnect
    function disconnectDB(){
        mysql_close();
    }
}

$art= new apple(); // instantiate the class
$art->goober(); //retrieves articles and displays them
//$art->insertArticle();
$art->disconnectDB();

?>