<?php

/*
$Id: class.nusoap_base.php,v 1.43 2005/08/04 01:27:42 snichol Exp $

NuSOAP - Web Services Toolkit for PHP

Copyright (c) 2002 NuSphere Corporation

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

If you have any questions or comments, please email:

Dietrich Ayala
dietrich@ganx4.com
http://dietrich.ganx4.com/nusoap

NuSphere Corporation
http://www.nusphere.com

*/

/* load classes

// necessary classes
require_once('class.soapclientw.php');
require_once('class.soap_val.php');
require_once('class.soap_parser.php');
require_once('class.soap_fault.php');

// transport classes
require_once('class.soap_transport_http.php');

// optional add-on classes
require_once('class.xmlschema.php');
require_once('class.wsdl.php');

// server class
require_once('class.soap_server.php');*/

// class variable emulation
// cf. http://www.webkreator.com/php/techniques/php-static-class-variables.html
$GLOBALS['_transient']['static']['nusoap_base']->globalDebugLevel = 9;

/**
*
* nusoap_base
*
* @author   Dietrich Ayala <dietrich@ganx4.com>
* @version  $Id: class.nusoap_base.php,v 1.43 2005/08/04 01:27:42 snichol Exp $
* @access   public
*/
class nusoap_base {
	/**
	 * Identification for HTTP headers.
	 *
	 * @var string
	 * @access private
	 */
	var $title = 'NuSOAP';
	/**
	 * Version for HTTP headers.
	 *
	 * @var string
	 * @access private
	 */
	var $version = '0.7.2';
	/**
	 * CVS revision for HTTP headers.
	 *
	 * @var string
	 * @access private
	 */
	var $revision = '$Revision: 1.43 $';
    /**
     * Current error string (manipulated by getError/setError)
	 *
	 * @var string
	 * @access private
	 */
	var $error_str = '';
    /**
     * Current debug string (manipulated by debug/appendDebug/clearDebug/getDebug/getDebugAsXMLComment)
	 *
	 * @var string
	 * @access private
	 */
    var $debug_str = '';
    /**
	 * toggles automatic encoding of special characters as entities
	 * (should always be true, I think)
	 *
	 * @var boolean
	 * @access private
	 */
	var $charencoding = true;
	/**
	 * the debug level for this instance
	 *
	 * @var	integer
	 * @access private
	 */
	var $debugLevel;

    /**
	* set schema version
	*
	* @var      string
	* @access   public
	*/
	var $XMLSchemaVersion = 'http://www.w3.org/2001/XMLSchema';
	
    /**
	* charset encoding for outgoing messages
	*
	* @var      string
	* @access   public
	*/
    var $soap_defencoding = 'ISO-8859-1';
	//var $soap_defencoding = 'UTF-8';

	/**
	* namespaces in an array of prefix => uri
	*
	* this is "seeded" by a set of constants, but it may be altered by code
	*
	* @var      array
	* @access   public
	*/
	var $namespaces = array(
		'SOAP-ENV' => 'http://schemas.xmlsoap.org/soap/envelope/',
		'xsd' => 'http://www.w3.org/2001/XMLSchema',
		'xsi' => 'http://www.w3.org/2001/XMLSchema-instance',
		'SOAP-ENC' => 'http://schemas.xmlsoap.org/soap/encoding/'
		);

	/**
	* namespaces used in the current context, e.g. during serialization
	*
	* @var      array
	* @access   private
	*/
	var $usedNamespaces = array();

	/**
	* XML Schema types in an array of uri => (array of xml type => php type)
	* is this legacy yet?
	* no, this is used by the xmlschema class to verify type => namespace mappings.
	* @var      array
	* @access   public
	*/
	var $typemap = array(
	'http://www.w3.org/2001/XMLSchema' => array(
		'string'=>'string','boolean'=>'boolean','float'=>'double','double'=>'double','decimal'=>'double',
		'duration'=>'','dateTime'=>'string','time'=>'string','date'=>'string','gYearMonth'=>'',
		'gYear'=>'','gMonthDay'=>'','gDay'=>'','gMonth'=>'','hexBinary'=>'string','base64Binary'=>'string',
		// abstract "any" types
		'anyType'=>'string','anySimpleType'=>'string',
		// derived datatypes
		'normalizedString'=>'string','token'=>'string','language'=>'','NMTOKEN'=>'','NMTOKENS'=>'','Name'=>'','NCName'=>'','ID'=>'',
		'IDREF'=>'','IDREFS'=>'','ENTITY'=>'','ENTITIES'=>'','integer'=>'integer','nonPositiveInteger'=>'integer',
		'negativeInteger'=>'integer','long'=>'integer','int'=>'integer','short'=>'integer','byte'=>'integer','nonNegativeInteger'=>'integer',
		'unsignedLong'=>'','unsignedInt'=>'','unsignedShort'=>'','unsignedByte'=>'','positiveInteger'=>''),
	'http://www.w3.org/2000/10/XMLSchema' => array(
		'i4'=>'','int'=>'integer','boolean'=>'boolean','string'=>'string','double'=>'double',
		'float'=>'double','dateTime'=>'string',
		'timeInstant'=>'string','base64Binary'=>'string','base64'=>'string','ur-type'=>'array'),
	'http://www.w3.org/1999/XMLSchema' => array(
		'i4'=>'','int'=>'integer','boolean'=>'boolean','string'=>'string','double'=>'double',
		'float'=>'double','dateTime'=>'string',
		'timeInstant'=>'string','base64Binary'=>'string','base64'=>'string','ur-type'=>'array'),
	'http://soapinterop.org/xsd' => array('SOAPStruct'=>'struct'),
	'http://schemas.xmlsoap.org/soap/encoding/' => array('base64'=>'string','array'=>'array','Array'=>'array'),
    'http://xml.apache.org/xml-soap' => array('Map')
	);

	/**
	* XML entities to convert
	*
	* @var      array
	* @access   public
	* @deprecated
	* @see	expandEntities
	*/
	var $xmlEntities = array('quot' => '"','amp' => '&',
		'lt' => '<','gt' => '>','apos' => "'");

	/**
	* constructor
	*
	* @access	public
	*/
	function nusoap_base() {
		$this->debugLevel = $GLOBALS['_transient']['static']['nusoap_base']->globalDebugLevel;
	}

	/**
	* gets the global debug level, which applies to future instances
	*
	* @return	integer	Debug level 0-9, where 0 turns off
	* @access	public
	*/
	function getGlobalDebugLevel() {
		return $GLOBALS['_transient']['static']['nusoap_base']->globalDebugLevel;
	}

	/**
	* sets the global debug level, which applies to future instances
	*
	* @param	int	$level	Debug level 0-9, where 0 turns off
	* @access	public
	*/
	function setGlobalDebugLevel($level) {
		$GLOBALS['_transient']['static']['nusoap_base']->globalDebugLevel = $level;
	}

	/**
	* gets the debug level for this instance
	*
	* @return	int	Debug level 0-9, where 0 turns off
	* @access	public
	*/
	function getDebugLevel() {
		return $this->debugLevel;
	}

	/**
	* sets the debug level for this instance
	*
	* @param	int	$level	Debug level 0-9, where 0 turns off
	* @access	public
	*/
	function setDebugLevel($level) {
		$this->debugLevel = $level;
	}

	/**
	* adds debug data to the instance debug string with formatting
	*
	* @param    string $string debug data
	* @access   private
	*/
	function debug($string){
		if ($this->debugLevel > 0) {
			$this->appendDebug($this->getmicrotime().' '.get_class($this).": $string\n");
		}
	}

	/**
	* adds debug data to the instance debug string without formatting
	*
	* @param    string $string debug data
	* @access   public
	*/
	function appendDebug($string){
		if ($this->debugLevel > 0) {
			// it would be nice to use a memory stream here to use
			// memory more efficiently
			$this->debug_str .= $string;
		}
	}

	/**
	* clears the current debug data for this instance
	*
	* @access   public
	*/
	function clearDebug() {
		// it would be nice to use a memory stream here to use
		// memory more efficiently
		$this->debug_str = '';
	}

	/**
	* gets the current debug data for this instance
	*
	* @return   debug data
	* @access   public
	*/
	function &getDebug() {
		// it would be nice to use a memory stream here to use
		// memory more efficiently
		return $this->debug_str;
	}

	/**
	* gets the current debug data for this instance as an XML comment
	* this may change the contents of the debug data
	*
	* @return   debug data as an XML comment
	* @access   public
	*/
	function &getDebugAsXMLComment() {
		// it would be nice to use a memory stream here to use
		// memory more efficiently
		while (strpos($this->debug_str, '--')) {
			$this->debug_str = str_replace('--', '- -', $this->debug_str);
		}
    	return "<!--\n" . $this->debug_str . "\n-->";
	}

	/**
	* expands entities, e.g. changes '<' to '&lt;'.
	*
	* @param	string	$val	The string in which to expand entities.
	* @access	private
	*/
	function expandEntities($val) {
		if ($this->charencoding) {
	    	$val = str_replace('&', '&amp;', $val);
	    	$val = str_replace("'", '&apos;', $val);
	    	$val = str_replace('"', '&quot;', $val);
	    	$val = str_replace('<', '&lt;', $val);
	    	$val = str_replace('>', '&gt;', $val);
	    }
	    return $val;
	}

	/**
	* returns error string if present
	*
	* @return   mixed error string or false
	* @access   public
	*/
	function getError(){
		if($this->error_str != ''){
			return $this->error_str;
		}
		return false;
	}

	/**
	* sets error string
	*
	* @return   boolean $string error string
	* @access   private
	*/
	function setError($str){
		$this->error_str = $str;
	}

	/**
	* detect if array is a simple array or a struct (associative array)
	*
	* @param	mixed	$val	The PHP array
	* @return	string	(arraySimple|arrayStruct)
	* @access	private
	*/
	function isArraySimpleOrStruct($val) {
        $keyList = array_keys($val);
		foreach ($keyList as $keyListValue) {
			if (!is_int($keyListValue)) {
				return 'arrayStruct';
			}
		}
		return 'arraySimple';
	}

	/**
	* serializes PHP values in accordance w/ section 5. Type information is
	* not serialized if $use == 'literal'.
	*
	* @param	mixed	$val	The value to serialize
	* @param	string	$name	The name (local part) of the XML element
	* @param	string	$type	The XML schema type (local part) for the element
	* @param	string	$name_ns	The namespace for the name of the XML element
	* @param	string	$type_ns	The namespace for the type of the element
	* @param	array	$attributes	The attributes to serialize as name=>value pairs
	* @param	string	$use	The WSDL "use" (encoded|literal)
	* @return	string	The serialized element, possibly with child elements
    * @access	public
	*/
	function serialize_val($val,$name=false,$type=false,$name_ns=false,$type_ns=false,$attributes=false,$use='encoded'){
		$this->debug("in serialize_val: name=$name, type=$type, name_ns=$name_ns, type_ns=$type_ns, use=$use");
		$this->appendDebug('value=' . $this->varDump($val));
		$this->appendDebug('attributes=' . $this->varDump($attributes));
		
    	if(is_object($val) && get_class($val) == 'soapval'){
        	return $val->serialize($use);
        }
		// force valid name if necessary
		if (is_numeric($name)) {
			$name = '__numeric_' . $name;
		} elseif (! $name) {
			$name = 'noname';
		}
		// if name has ns, add ns prefix to name
		$xmlns = '';
        if($name_ns){
			$prefix = 'nu'.rand(1000,9999);
			$name = $prefix.':'.$name;
			$xmlns .= " xmlns:$prefix=\"$name_ns\"";
		}
		// if type is prefixed, create type prefix
		if($type_ns != '' && $type_ns == $this->namespaces['xsd']){
			// need to fix this. shouldn't default to xsd if no ns specified
		    // w/o checking against typemap
			$type_prefix = 'xsd';
		} elseif($type_ns){
			$type_prefix = 'ns'.rand(1000,9999);
			$xmlns .= " xmlns:$type_prefix=\"$type_ns\"";
		}
		// serialize attributes if present
		$atts = '';
		if($attributes){
			foreach($attributes as $k => $v){
				$atts .= " $k=\"".$this->expandEntities($v).'"';
			}
		}
		// serialize null value
		if (is_null($val)) {
			if ($use == 'literal') {
				// TODO: depends on minOccurs
	        	return "<$name$xmlns $atts/>";
        	} else {
				if (isset($type) && isset($type_prefix)) {
					$type_str = " xsi:type=\"$type_prefix:$type\"";
				} else {
					$type_str = '';
				}
	        	return "<$name$xmlns$type_str $atts xsi:nil=\"true\"/>";
        	}
		}
        // serialize if an xsd built-in primitive type
        if($type != '' && isset($this->typemap[$this->XMLSchemaVersion][$type])){
        	if (is_bool($val)) {
        		if ($type == 'boolean') {
	        		$val = $val ? 'true' : 'false';
	        	} elseif (! $val) {
	        		$val = 0;
	        	}
			} else if (is_string($val)) {
				$val = $this->expandEntities($val);
			}
			if ($use == 'literal') {
	        	return "<$name$xmlns $atts>$val</$name>";
        	} else {
	        	return "<$name$xmlns $atts xsi:type=\"xsd:$type\">$val</$name>";
        	}
        }
		// detect type and serialize
		$xml = '';
		switch(true) {
			case (is_bool($val) || $type == 'boolean'):
        		if ($type == 'boolean') {
	        		$val = $val ? 'true' : 'false';
	        	} elseif (! $val) {
	        		$val = 0;
	        	}
				if ($use == 'literal') {
					$xml .= "<$name$xmlns $atts>$val</$name>";
				} else {
					$xml .= "<$name$xmlns xsi:type=\"xsd:boolean\"$atts>$val</$name>";
				}
				break;
			case (is_int($val) || is_long($val) || $type == 'int'):
				if ($use == 'literal') {
					$xml .= "<$name$xmlns $atts>$val</$name>";
				} else {
					$xml .= "<$name$xmlns xsi:type=\"xsd:int\"$atts>$val</$name>";
				}
				break;
			case (is_float($val)|| is_double($val) || $type == 'float'):
				if ($use == 'literal') {
					$xml .= "<$name$xmlns $atts>$val</$name>";
				} else {
					$xml .= "<$name$xmlns xsi:type=\"xsd:float\"$atts>$val</$name>";
				}
				break;
			case (is_string($val) || $type == 'string'):
				$val = $this->expandEntities($val);
				if ($use == 'literal') {
					$xml .= "<$name$xmlns $atts>$val</$name>";
				} else {
					$xml .= "<$name$xmlns xsi:type=\"xsd:string\"$atts>$val</$name>";
				}
				break;
			case is_object($val):
				if (! $name) {
					$name = get_class($val);
					$this->debug("In serialize_val, used class name $name as element name");
				} else {
					$this->debug("In serialize_val, do not override name $name for element name for class " . get_class($val));
				}
				foreach(get_object_vars($val) as $k => $v){
					$pXml = isset($pXml) ? $pXml.$this->serialize_val($v,$k,false,false,false,false,$use) : $this->serialize_val($v,$k,false,false,false,false,$use);
				}
				$xml .= '<'.$name.'>'.$pXml.'</'.$name.'>';
				break;
			break;
			case (is_array($val) || $type):
				// detect if struct or array
				$valueType = $this->isArraySimpleOrStruct($val);
                if($valueType=='arraySimple' || ereg('^ArrayOf',$type)){
					$i = 0;
					if(is_array($val) && count($val)> 0){
						foreach($val as $v){
	                    	if(is_object($v) && get_class($v) ==  'soapval'){
								$tt_ns = $v->type_ns;
								$tt = $v->type;
							} elseif (is_array($v)) {
								$tt = $this->isArraySimpleOrStruct($v);
							} else {
								$tt = gettype($v);
	                        }
							$array_types[$tt] = 1;
							// TODO: for literal, the name should be $name
							$xml .= $this->serialize_val($v,'item',false,false,false,false,$use);
							++$i;
						}
						if(count($array_types) > 1){
							$array_typename = 'xsd:anyType';
						} elseif(isset($tt) && isset($this->typemap[$this->XMLSchemaVersion][$tt])) {
							if ($tt == 'integer') {
								$tt = 'int';
							}
							$array_typename = 'xsd:'.$tt;
						} elseif(isset($tt) && $tt == 'arraySimple'){
							$array_typename = 'SOAP-ENC:Array';
						} elseif(isset($tt) && $tt == 'arrayStruct'){
							$array_typename = 'unnamed_struct_use_soapval';
						} else {
							// if type is prefixed, create type prefix
							if ($tt_ns != '' && $tt_ns == $this->namespaces['xsd']){
								 $array_typename = 'xsd:' . $tt;
							} elseif ($tt_ns) {
								$tt_prefix = 'ns' . rand(1000, 9999);
								$array_typename = "$tt_prefix:$tt";
								$xmlns .= " xmlns:$tt_prefix=\"$tt_ns\"";
							} else {
								$array_typename = $tt;
							}
						}
						$array_type = $i;
						if ($use == 'literal') {
							$type_str = '';
						} else if (isset($type) && isset($type_prefix)) {
							$type_str = " xsi:type=\"$type_prefix:$type\"";
						} else {
							$type_str = " xsi:type=\"SOAP-ENC:Array\" SOAP-ENC:arrayType=\"".$array_typename."[$array_type]\"";
						}
					// empty array
					} else {
						if ($use == 'literal') {
							$type_str = '';
						} else if (isset($type) && isset($type_prefix)) {
							$type_str = " xsi:type=\"$type_prefix:$type\"";
						} else {
							$type_str = " xsi:type=\"SOAP-ENC:Array\" SOAP-ENC:arrayType=\"xsd:anyType[0]\"";
						}
					}
					// TODO: for array in literal, there is no wrapper here
					$xml = "<$name$xmlns$type_str$atts>".$xml."</$name>";
				} else {
					// got a struct
					if(isset($type) && isset($type_prefix)){
						$type_str = " xsi:type=\"$type_prefix:$type\"";
					} else {
						$type_str = '';
					}
					if ($use == 'literal') {
						$xml .= "<$name$xmlns $atts>";
					} else {
						$xml .= "<$name$xmlns$type_str$atts>";
					}
					foreach($val as $k => $v){
						// Apache Map
						if ($type == 'Map' && $type_ns == 'http://xml.apache.org/xml-soap') {
							$xml .= '<item>';
							$xml .= $this->serialize_val($k,'key',false,false,false,false,$use);
							$xml .= $this->serialize_val($v,'value',false,false,false,false,$use);
							$xml .= '</item>';
						} else {
							$xml .= $this->serialize_val($v,$k,false,false,false,false,$use);
						}
					}
					$xml .= "</$name>";
				}
				break;
			default:
				$xml .= 'not detected, got '.gettype($val).' for '.$val;
				break;
		}
		return $xml;
	}

    /**
    * serializes a message
    *
    * @param string $body the XML of the SOAP body
    * @param mixed $headers optional string of XML with SOAP header content, or array of soapval objects for SOAP headers
    * @param array $namespaces optional the namespaces used in generating the body and headers
    * @param string $style optional (rpc|document)
    * @param string $use optional (encoded|literal)
    * @param string $encodingStyle optional (usually 'http://schemas.xmlsoap.org/soap/encoding/' for encoded)
    * @return string the message
    * @access public
    */
    function serializeEnvelope($body,$headers=false,$namespaces=array(),$style='rpc',$use='encoded',$encodingStyle='http://schemas.xmlsoap.org/soap/encoding/'){
    // TODO: add an option to automatically run utf8_encode on $body and $headers
    // if $this->soap_defencoding is UTF-8.  Not doing this automatically allows
    // one to send arbitrary UTF-8 characters, not just characters that map to ISO-8859-1

	$this->debug("In serializeEnvelope length=" . strlen($body) . " body (max 1000 characters)=" . substr($body, 0, 1000) . " style=$style use=$use encodingStyle=$encodingStyle");
	$this->debug("headers:");
	$this->appendDebug($this->varDump($headers));
	$this->debug("namespaces:");
	$this->appendDebug($this->varDump($namespaces));

	// serialize namespaces
    $ns_string = '';
	foreach(array_merge($this->namespaces,$namespaces) as $k => $v){
		$ns_string .= " xmlns:$k=\"$v\"";
	}
	if($encodingStyle) {
		$ns_string = " SOAP-ENV:encodingStyle=\"$encodingStyle\"$ns_string";
	}

	// serialize headers
	if($headers){
		if (is_array($headers)) {
			$xml = '';
			foreach ($headers as $header) {
				$xml .= $this->serialize_val($header, false, false, false, false, false, $use);
			}
			$headers = $xml;
			$this->debug("In serializeEnvelope, serialzied array of headers to $headers");
		}
		$headers = "<SOAP-ENV:Header>".$headers."</SOAP-ENV:Header>";
	}
	// serialize envelope
	return
	'<?xml version="1.0" encoding="'.$this->soap_defencoding .'"?'.">".
	'<SOAP-ENV:Envelope'.$ns_string.">".
	$headers.
	"<SOAP-ENV:Body>".
		$body.
	"</SOAP-ENV:Body>".
	"</SOAP-ENV:Envelope>";
    }

	/**
	 * formats a string to be inserted into an HTML stream
	 *
	 * @param string $str The string to format
	 * @return string The formatted string
	 * @access public
	 * @deprecated
	 */
    function formatDump($str){
		$str = htmlspecialchars($str);
		return nl2br($str);
    }

	/**
	* contracts (changes namespace to prefix) a qualified name
	*
	* @param    string $qname qname
	* @return	string contracted qname
	* @access   private
	*/
	function contractQname($qname){
		// get element namespace
		//$this->xdebug("Contract $qname");
		if (strrpos($qname, ':')) {
			// get unqualified name
			$name = substr($qname, strrpos($qname, ':') + 1);
			// get ns
			$ns = substr($qname, 0, strrpos($qname, ':'));
			$p = $this->getPrefixFromNamespace($ns);
			if ($p) {
				return $p . ':' . $name;
			}
			return $qname;
		} else {
			return $qname;
		}
	}

	/**
	* expands (changes prefix to namespace) a qualified name
	*
	* @param    string $string qname
	* @return	string expanded qname
	* @access   private
	*/
	function expandQname($qname){
		// get element prefix
		if(strpos($qname,':') && !ereg('^http://',$qname)){
			// get unqualified name
			$name = substr(strstr($qname,':'),1);
			// get ns prefix
			$prefix = substr($qname,0,strpos($qname,':'));
			if(isset($this->namespaces[$prefix])){
				return $this->namespaces[$prefix].':'.$name;
			} else {
				return $qname;
			}
		} else {
			return $qname;
		}
	}

    /**
    * returns the local part of a prefixed string
    * returns the original string, if not prefixed
    *
    * @param string $str The prefixed string
    * @return string The local part
    * @access public
    */
	function getLocalPart($str){
		if($sstr = strrchr($str,':')){
			// get unqualified name
			return substr( $sstr, 1 );
		} else {
			return $str;
		}
	}

	/**
    * returns the prefix part of a prefixed string
    * returns false, if not prefixed
    *
    * @param string $str The prefixed string
    * @return mixed The prefix or false if there is no prefix
    * @access public
    */
	function getPrefix($str){
		if($pos = strrpos($str,':')){
			// get prefix
			return substr($str,0,$pos);
		}
		return false;
	}

	/**
    * pass it a prefix, it returns a namespace
    *
    * @param string $prefix The prefix
    * @return mixed The namespace, false if no namespace has the specified prefix
    * @access public
    */
	function getNamespaceFromPrefix($prefix){
		if (isset($this->namespaces[$prefix])) {
			return $this->namespaces[$prefix];
		}
		//$this->setError("No namespace registered for prefix '$prefix'");
		return false;
	}

	/**
    * returns the prefix for a given namespace (or prefix)
    * or false if no prefixes registered for the given namespace
    *
    * @param string $ns The namespace
    * @return mixed The prefix, false if the namespace has no prefixes
    * @access public
    */
	function getPrefixFromNamespace($ns) {
		foreach ($this->namespaces as $p => $n) {
			if ($ns == $n || $ns == $p) {
			    $this->usedNamespaces[$p] = $n;
				return $p;
			}
		}
		return false;
	}

	/**
    * returns the time in ODBC canonical form with microseconds
    *
    * @return string The time in ODBC canonical form with microseconds
    * @access public
    */
	function getmicrotime() {
		if (function_exists('gettimeofday')) {
			$tod = gettimeofday();
			$sec = $tod['sec'];
			$usec = $tod['usec'];
		} else {
			$sec = time();
			$usec = 0;
		}
		return strftime('%Y-%m-%d %H:%M:%S', $sec) . '.' . sprintf('%06d', $usec);
	}

	/**
	 * Returns a string with the output of var_dump
	 *
	 * @param mixed $data The variable to var_dump
	 * @return string The output of var_dump
	 * @access public
	 */
    function varDump($data) {
		ob_start();
		var_dump($data);
		$ret_val = ob_get_contents();
		ob_end_clean();
		return $ret_val;
	}
}

// XML Schema Datatype Helper Functions

//xsd:dateTime helpers

/**
* convert unix timestamp to ISO 8601 compliant date string
*
* @param    string $timestamp Unix time stamp
* @access   public
*/
function timestamp_to_iso8601($timestamp,$utc=true){
	$datestr = date('Y-m-d\TH:i:sO',$timestamp);
	if($utc){
		$eregStr =
		'([0-9]{4})-'.	// centuries & years CCYY-
		'([0-9]{2})-'.	// months MM-
		'([0-9]{2})'.	// days DD
		'T'.			// separator T
		'([0-9]{2}):'.	// hours hh:
		'([0-9]{2}):'.	// minutes mm:
		'([0-9]{2})(\.[0-9]*)?'. // seconds ss.ss...
		'(Z|[+\-][0-9]{2}:?[0-9]{2})?'; // Z to indicate UTC, -/+HH:MM:SS.SS... for local tz's

		if(ereg($eregStr,$datestr,$regs)){
			return sprintf('%04d-%02d-%02dT%02d:%02d:%02dZ',$regs[1],$regs[2],$regs[3],$regs[4],$regs[5],$regs[6]);
		}
		return false;
	} else {
		return $datestr;
	}
}

/**
* convert ISO 8601 compliant date string to unix timestamp
*
* @param    string $datestr ISO 8601 compliant date string
* @access   public
*/
function iso8601_to_timestamp($datestr){
	$eregStr =
	'([0-9]{4})-'.	// centuries & years CCYY-
	'([0-9]{2})-'.	// months MM-
	'([0-9]{2})'.	// days DD
	'T'.			// separator T
	'([0-9]{2}):'.	// hours hh:
	'([0-9]{2}):'.	// minutes mm:
	'([0-9]{2})(\.[0-9]+)?'. // seconds ss.ss...
	'(Z|[+\-][0-9]{2}:?[0-9]{2})?'; // Z to indicate UTC, -/+HH:MM:SS.SS... for local tz's
	if(ereg($eregStr,$datestr,$regs)){
		// not utc
		if($regs[8] != 'Z'){
			$op = substr($regs[8],0,1);
			$h = substr($regs[8],1,2);
			$m = substr($regs[8],strlen($regs[8])-2,2);
			if($op == '-'){
				$regs[4] = $regs[4] + $h;
				$regs[5] = $regs[5] + $m;
			} elseif($op == '+'){
				$regs[4] = $regs[4] - $h;
				$regs[5] = $regs[5] - $m;
			}
		}
		return strtotime("$regs[1]-$regs[2]-$regs[3] $regs[4]:$regs[5]:$regs[6]Z");
	} else {
		return false;
	}
}

/**
* sleeps some number of microseconds
*
* @param    string $usec the number of microseconds to sleep
* @access   public
* @deprecated
*/
function usleepWindows($usec)
{
	$start = gettimeofday();
	
	do
	{
		$stop = gettimeofday();
		$timePassed = 1000000 * ($stop['sec'] - $start['sec'])
		+ $stop['usec'] - $start['usec'];
	}
	while ($timePassed < $usec);
}


?>