Klasse erzeugen

Ordovicium

Ich schaffe es einfach nicht aus folgendem eine Klasse zu erzeugen:
Ich möchte der Klasse schlussendlich nur noch die URL übergeben.

PHP

<?php 
$file = "http://www.informatik-forum.at/external.php?type=XML";
$stack = array();


// start_element_handler ( resource parser, string name, array attribs )
function startElement($parser, $name, $attribs)
{
   global $stack;
   $tag=array("name"=>$name,"attrs"=>$attrs);
   array_push($stack,$tag);
}


// end_element_handler ( resource parser, string name )
function endElement($parser, $name)
{
   global $stack;
   $stack[count($stack)-2]['children'][] = $stack[count($stack)-1];
   array_pop($stack);
}


// handler ( resource parser, string data )
function characterData($parser, $data)
{
   global $stack,$i;


   if(trim($data))
   { 
             $stack[count($stack)-1]['data'] .= $data; 
   }
}


// handler ( resource parser, string target, string data )
function PIHandler($parser, $target, $data)
{
global $stack,$i;
//PHP EVALUATION
   if ((strtolower($target)) == "php") {
           global $parser_file;
         //eval($data);  gust doesn't work if you want the
         //string added to the array
         $text .= '<?php '.$data.' ?>'; 
         ob_start();
           eval ('?>' . $text);
           $text = ob_get_clean();
           $stack[count($stack)-1]['data'] .= $text;

   }

}


function defaultHandler($parser, $data)
{

}


function externalEntityRefHandler($parser, $openEntityNames, $base, $systemId,
                                 $publicId) {
   if ($systemId) {
       if (!list($parser, $fp) = new_xml_parser($systemId)) {
           printf("Could not open entity %s at %s\n", $openEntityNames,
                   $systemId);
           return false;
       }
       while ($data = fread($fp, 4096)) {
           if (!xml_parse($parser, $data, feof($fp))) {
               printf("XML error: %s at line %d while parsing entity %s\n",
                       xml_error_string(xml_get_error_code($parser)),
                       xml_get_current_line_number($parser), $openEntityNames);
               xml_parser_free($parser);
               return false;
           }
       }
       xml_parser_free($parser);
       return true;
   }
   return false;
}


function new_xml_parser($file)
{
   global $parser_file;
   $xml_parser = xml_parser_create();

   xml_parser_set_option($xml_parser, XML_OPTION_CASE_FOLDING, 0);

   xml_set_processing_instruction_handler($xml_parser, "PIHandler");

   xml_set_element_handler($xml_parser, "startElement", "endElement");

   xml_set_character_data_handler($xml_parser, "characterData");

   xml_set_default_handler($xml_parser, "defaultHandler");

   xml_set_external_entity_ref_handler($xml_parser, "externalEntityRefHandler");
 
   if (!($fp = @fopen($file, "r"))) {
       return false;
   }
   if (!is_array($parser_file)) {
       settype($parser_file, "array");
   }
   $parser_file[$xml_parser] = $file;
   return array($xml_parser, $fp);
}


if (!(list($xml_parser, $fp) = new_xml_parser($file))) {
   die("could not open XML input");
}


//ERROR
while ($data = fread($fp, 4096)) {
   if (!xml_parse($xml_parser, $data, feof($fp))) {
       die(sprintf("XML error: %s at line %d\n",
                   xml_error_string(xml_get_error_code($xml_parser)),
                   xml_get_current_line_number($xml_parser)));
   }
}
//END
xml_parser_free($xml_parser);
print_r($stack); 
?>

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anty

Ich habs nicht getestet, aber ich denke das sollte dir zumindest ungefähr zeigen wie das ganze aussehen soll.

PHP

<?php
class classname {
    var $file = "http://www.informatik-forum.at/external.php?type=XML";
    var $stack = array();

    // construct, muss den gleichen namen haben wie die class
    function classname($file) {
        $this->file = $file;
    }

    // start_element_handler ( resource parser, string name, array attribs )
    function startElement($parser, $name, $attribs)
    {
       global $this->stack;
       $tag=array("name"=>$name,"attrs"=>$attrs);
       array_push($this->stack,$tag);
    }

    // end_element_handler ( resource parser, string name )
    function endElement($parser, $name)
    {
       global $this->stack;
       $this->stack[count($this->stack)-2]['children'][] = $this->stack[count($this->stack)-1];
       array_pop($this->stack);
    }

    // handler ( resource parser, string data )
    function characterData($parser, $data)
    {
       global $this->stack,$i;


       if(trim($data))
       {
                 $this->stack[count($this->stack)-1]['data'] .= $data;
       }
    }

    // handler ( resource parser, string target, string data )
    function PIHandler($parser, $target, $data)
    {
    global $this->stack,$i;
    //PHP EVALUATION
       if ((strtolower($target)) == "php") {
               global $parser_file;
             //eval($data);  gust doesn't work if you want the
             //string added to the array
             $text .= '<?php '.$data.' ?>';
             ob_start();
               eval ('?>' . $text);
               $text = ob_get_clean();
               $this->stack[count($this->stack)-1]['data'] .= $text;

       }

    }

    function defaultHandler($parser, $data)
    {

    }

    function externalEntityRefHandler($parser, $openEntityNames, $base, $systemId,
                                     $publicId) {
       if ($systemId) {
           if (!list($parser, $fp) = new_xml_parser($systemId)) {
               printf("Could not open entity %s at %s\n", $openEntityNames,
                       $systemId);
               return false;
           }
           while ($data = fread($fp, 4096)) {
               if (!xml_parse($parser, $data, feof($fp))) {
                   printf("XML error: %s at line %d while parsing entity %s\n",
                           xml_error_string(xml_get_error_code($parser)),
                           xml_get_current_line_number($parser), $openEntityNames);
                   xml_parser_free($parser);
                   return false;
               }
           }
           xml_parser_free($parser);
           return true;
       }
       return false;
    }

    function new_xml_parser($this->file)
    {
       global $parser_file;
       $xml_parser = xml_parser_create();

       xml_parser_set_option($xml_parser, XML_OPTION_CASE_FOLDING, 0);

       xml_set_processing_instruction_handler($xml_parser, "PIHandler");

       xml_set_element_handler($xml_parser, "startElement", "endElement");

       xml_set_character_data_handler($xml_parser, "characterData");

       xml_set_default_handler($xml_parser, "defaultHandler");

       xml_set_external_entity_ref_handler($xml_parser, "externalEntityRefHandler");

       if (!($fp = @fopen($this->file, "r"))) {
           return false;
       }
       if (!is_array($parser_file)) {
           settype($parser_file, "array");
       }
       $parser_file[$xml_parser] = $this->file;
       return array($xml_parser, $fp);
    }

    if (!(list($xml_parser, $fp) = new_xml_parser($this->file))) {
       die("could not open XML input");
    }

    //ERROR
    while ($data = fread($fp, 4096)) {
       if (!xml_parse($xml_parser, $data, feof($fp))) {
           die(sprintf("XML error: %s at line %d\n",
                       xml_error_string(xml_get_error_code($xml_parser)),
                       xml_get_current_line_number($xml_parser)));
       }
    }
    //END
    xml_parser_free($xml_parser);
    print_r($this->stack);
}
?>

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die "global"s würde ich übrigens durch $this-> ersetzen...

davewood

ab php 5 sollte man für den constructor

public function __construct()

verwenden und nicht mehr den klassennamen, frag mich jetzt nicht wieso.
nachlesen auf php.net

Ordovicium

Code

[B]Fatal error[/B]:  Cannot re-assign $this in [B]D:\apachefriends\xampp\htdocs\teko\public_html\class\xmlparser.php[/B] on line [B]14[/B]

Zeile 14:
global $this->stack;

Aber wie gesagt mein Ziel wäre es der Klasse/Funktion eine Adresse zu liefern und ein array mit den Infos zurück zu bekommen.

PHP

<?php 
include('class/xmlparser.php');
$p = new xmlparser();
$stack = $p->xmlparser("http://www.informatik-forum.at/external.php?type=XML");
echo "<PRE>";
print_r($stack);
echo "</PRE>";
?>

Mein Versuch ging dahin, aus dem letzem Abschnitt (if (!(list($xml_parser, $fp) = new_xml_parser($this->file)))) eine Funktion zu machen und dort den start zu initieren, aber irgendwie will es ned so ganz.

Ordovicium

Also bei folgendem bekomme ich lauter fehlermeldungen:

Klasse:

PHP

<?php
class XMLParser
{
    var $file;
    var $stack = array();

    // start_element_handler ( resource parser, string name, array attribs )
    function startElement($parser, $name, $attribs)
    {
       global $stack;
       $tag=array("name"=>$name,"attrs"=>$attrs);
       array_push($stack,$tag);
    }

    // end_element_handler ( resource parser, string name )
    function endElement($parser, $name)
    {
       global $stack;
       $stack[count($stack)-2]['children'][] = $stack[count($stack)-1];
       array_pop($stack);
    }

    // handler ( resource parser, string data )
    function characterData($parser, $data)
    {
       global $stack,$i;


       if(trim($data))
       { 
                 $stack[count($stack)-1]['data'] .= $data; 
       }
    }
    // handler ( resource parser, string target, string data )
    function PIHandler($parser, $target, $data)
    {
    global $stack,$i;
    //PHP EVALUATION
       if ((strtolower($target)) == "php") {
               global $parser_file;
             //eval($data);  gust doesn't work if you want the
             //string added to the array
             $text .= '<?php '.$data.' ?>'; 
             ob_start();
               eval ('?>' . $text);
               $text = ob_get_clean();
               $stack[count($stack)-1]['data'] .= $text;

       }

    }

    function defaultHandler($parser, $data)
    {

    }

    function externalEntityRefHandler($parser, $openEntityNames, $base, $systemId,
                                     $publicId) {
       if ($systemId) {
           if (!list($parser, $fp) = new_xml_parser($systemId)) {
               printf("Could not open entity %s at %s\n", $openEntityNames,
                       $systemId);
               return false;
           }
           while ($data = fread($fp, 4096)) {
               if (!xml_parse($parser, $data, feof($fp))) {
                   printf("XML error: %s at line %d while parsing entity %s\n",
                           xml_error_string(xml_get_error_code($parser)),
                           xml_get_current_line_number($parser), $openEntityNames);
                   xml_parser_free($parser);
                   return false;
               }
           }
           xml_parser_free($parser);
           return true;
       }
       return false;
    }

    function new_xml_parser($file)
    {
       global $parser_file;
       $xml_parser = xml_parser_create();

       xml_parser_set_option($xml_parser, XML_OPTION_CASE_FOLDING, 0);

       xml_set_processing_instruction_handler($xml_parser, "PIHandler");

       xml_set_element_handler($xml_parser, "startElement", "endElement");

       xml_set_character_data_handler($xml_parser, "characterData");

       xml_set_default_handler($xml_parser, "defaultHandler");

       xml_set_external_entity_ref_handler($xml_parser, "externalEntityRefHandler");

       if (!($fp = @fopen($file, "r"))) {
           return false;
       }
       if (!is_array($parser_file)) {
           settype($parser_file, "array");
       }
       $parser_file[$xml_parser] = $file;
       return array($xml_parser, $fp);
    }
    function NewParse($file)
    {
        if (!(list($xml_parser, $fp) = $this->new_xml_parser($file))) {
           die("could not open XML input");
        }

        //ERROR
        while ($data = fread($fp, 4096)) {
           if (!xml_parse($xml_parser, $data, feof($fp))) {
               die(sprintf("XML error: %s at line %d\n",
                           xml_error_string(xml_get_error_code($xml_parser)),
                           xml_get_current_line_number($xml_parser)));
           }
        }
        //END
        xml_parser_free($xml_parser);
        return $stack;
    }
}
?>

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Aufruf:

PHP

<?
include("class/xmlparser.php");


$p = new XMLParser();
$stack = $p->NewParse("http://www.informatik-forum.at/external.php?type=XML");


print("<pre>\n");
print_r($stack);
print("</pre>\n");
?>

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Fehler:

Code

[B]Warning[/B]:  xml_parse() [[URL='http://localhost/teko/public_html/function.xml-parse']function.xml-parse[/URL]]: Unable to call handler startElement() in [B]D:\apachefriends\xampp\htdocs\teko\public_html\class\xmlparser.php[/B] on line [B]115[/B]


[B]Warning[/B]:  xml_parse() [[URL='http://localhost/teko/public_html/function.xml-parse']function.xml-parse[/URL]]: Unable to call handler characterData() in [B]D:\apachefriends\xampp\htdocs\teko\public_html\class\xmlparser.php[/B] on line [B]115[/B]


[B]Warning[/B]:  xml_parse() [[URL='http://localhost/teko/public_html/function.xml-parse']function.xml-parse[/URL]]: Unable to call handler endElement() in [B]D:\apachefriends\xampp\htdocs\teko\public_html\class\xmlparser.php[/B] on line [B]115[/B]

Und das so oft wie Einträge in der XML sind. Aber wo ruft er die Funktionen auf damit ich mit $this darauf verweisen kann.

Paulchen

Du brauchst vermutlich in der Methode new_xml_parser vor dem Zuweisen der Handler ein xml_set_object:

PHP

xml_set_object($xml_parser, $this);

InspectorGadjet

also mit dem untenstehenden code funktioniert der parser in php5... hoffe er macht dir spass wenn du ihn für php4 brauchst, musst du alle private und public wörter löschen und oben bei den 3 variablen ein var davorschreiben...

PHP

<?php
class XMLParser
{
private $file;
private $stack = array();
private $parser_file = null;
 
// start_element_handler ( resource parser, string name, array attribs )
private function startElement($parser, $name, $attribs)
{
 
$tag=array("name"=>$name,"attrs"=>$attribs);
array_push($this->stack,$tag);
}
 
// end_element_handler ( resource parser, string name )
private function endElement($parser, $name)
{
 
$this->stack[count($this->stack)-2]['children'][] = $this->stack[count($this->stack)-1];
array_pop($this->stack);
}
 
// handler ( resource parser, string data )
private function characterData($parser, $data)
{ 
if(trim($data))
{ 
if(isset($this->stack[count($this->stack)-1]['data']))
{
$this->stack[count($this->stack)-1]['data'] .= $data; 
}
else
{
$this->stack[count($this->stack)-1]['data'] = $data;
}
}
}
// handler ( resource parser, string target, string data )
private function PIHandler($parser, $target, $data)
{
//PHP EVALUATION
if ((strtolower($target)) == "php") {
 
//eval($data); gust doesn't work if you want the
//string added to the array
$text .= '<?php '.$data.' ?>'; 
ob_start();
eval ('?>' . $text);
$text = ob_get_clean();
$this->stack[count($this->stack)-1]['data'] .= $text;
 
}
 
}
 
private function defaultHandler($parser, $data)
{
 
}
 
private function externalEntityRefHandler($parser, $openEntityNames, $base, $systemId,
$publicId) {
if ($systemId) {
if (!list($parser, $fp) = new_xml_parser($systemId)) {
printf("Could not open entity %s at %s\n", $openEntityNames,
$systemId);
return false;
}
while ($data = fread($fp, 4096)) {
if (!xml_parse($parser, $data, feof($fp))) {
printf("XML error: %s at line %d while parsing entity %s\n",
xml_error_string(xml_get_error_code($parser)),
xml_get_current_line_number($parser), $openEntityNames);
xml_parser_free($parser);
return false;
}
}
xml_parser_free($parser);
return true;
}
return false;
}
 
private function new_xml_parser($file)
{
 
$xml_parser = xml_parser_create();
 
xml_parser_set_option($xml_parser, XML_OPTION_CASE_FOLDING, 0);
 
xml_set_processing_instruction_handler($xml_parser, array (&$this, "PIHandler"));
 
xml_set_element_handler($xml_parser, array (&$this, "startElement"), array (&$this, "endElement"));
 
xml_set_character_data_handler($xml_parser, array ( &$this, "characterData"));
 
xml_set_default_handler($xml_parser, array ( &$this, "defaultHandler"));
 
xml_set_external_entity_ref_handler($xml_parser, array ( &$this, "externalEntityRefHandler"));
 
if (!($fp = @fopen($file, "r"))) {
return false;
}
if (!is_array($this->parser_file)) {
settype($this->parser_file, "array");
}
$this->parser_file[$xml_parser] = $file;
return array($xml_parser, $fp);
}
 
function NewParse($file)
{
if (!(list($xml_parser, $fp) = $this->new_xml_parser($file))) {
die("could not open XML input");
}
 
//ERROR
while ($data = fread($fp, 4096)) {
if (!xml_parse($xml_parser, $data, feof($fp))) {
die(sprintf("XML error: %s at line %d\n",
xml_error_string(xml_get_error_code($xml_parser)),
xml_get_current_line_number($xml_parser)));
}
}
//END
xml_parser_free($xml_parser);
return $this->stack;
}
}
?> 
<?
$p = new XMLParser();
$stack = $p->NewParse("http://www.informatik-forum.at/external.php?type=XML");
print("<pre>\n");
print_r($stack);
print("</pre>\n");
?>

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Ordovicium

InspectorGadjet: 1000 Dank. Jetzt funktioniert es wunderbar.

Jetzt mitmachen!