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Title : XML easy parser
Categories : PHP, XML Update Picture
Rubens Oliveira
Date : Feb 15th 2001
Grade : 2 of 5 (graded 3 times)
Viewed : 4443
File : No file for this code example.
Images : No Images for this code example.
Search : More code by Rubens Oliveira
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Requeriments: PHP4 or above.

class of XML easy parser:

<?

class easy_parser{

var $old_element = "";
var $attribute = array();
var $dado = "";
var $array_element = array();
var $array_attribute_value = array();
var $array_attributes = array();
var $array_nodes = array();
var $current_element = "";
var $array_texto = array();
var $get_err = "";
var $texto = "";

function getpart($texto,$string,$reset=TRUE,$position=0)
{
static $p0=0;
$p0 += $position;
if($reset){
        $p0 = 0;
}
$get = "";
$string = trim($string);
if(strpos($texto,"<$string>",$p0) >=0)
{
$p1 = strpos($texto,"<$string>",$p0);
$p2 = strpos($texto,"</$string>",$p0);
$len = strlen("<$string>");
$get = substr($texto,($p1 + $len),($p2 - $p1 - $len));
$p0 = $p2+$len;
}
return $get;
}


function getrpart($texto,$string)
{

$get = "";
$string = trim($string);

if(strrpos($texto,"<$string>") >=0)
{

$p1 = strrpos($texto,"<$string>");
$texto2 = substr($texto,0,$p1);
$p2 = strrpos($texto2,"</$string>");
$len = strlen("<$string>");
$get = substr($texto2,$p2);
}
return $get;
}

function parser($document,$is_file=TRUE){
        $result = TRUE;
        $ext_val = array();
        $ext_key = array();
        $parser = xml_parser_create();
        xml_set_object($parser,&$this);
        xml_parser_set_option($parser,XML_OPTION_CASE_FOLDING, 0);
        xml_set_element_handler($parser,"start_element","end_element");
        xml_set_character_data_handler($parser,"character_data");

        if($is_file){
         if(file_exists($document)){
                
                 $xml_file = fopen($document,"r");
                 $data = "";
                 $ind = 0;
                while (!feof($xml_file)) {
                 $data = fgets($xml_file,1024);
                 if(ereg("<!ENTITY.*SYSTEM",$data,$matchs) && strpos($data,"NDATA")
< 1){
                        $arrai = split(" ",$data);
                        $arrai[3] = str_replace("\">","",$arrai[3]);
                        $arrai[3] = trim(str_replace("\"","",$arrai[3]));
                        if(file_exists($arrai[3])){
                                $fp = fopen($arrai[3],"r");
                                while(!feof($fp)){
                                        $ext_val[$ind] .= fgets($fp,1024);
                                }
                                fclose($fp);
                                $ext_key[$ind] = trim($arrai[1]);
                                ++$ind;
                        }
                 }

                 $this->texto .= $data;
                }
                
                fclose($xml_file);
         }else{
                print "<b><h3>The file: <font color=\"blue\">$document</font> not
found.</b><h3>";
                return 0;
         }
        }else{
         $this->texto = $document;        
         }

        if($ext_val != ""){
         $ind = 0;
         foreach($ext_val as $value){
                $this->texto = str_replace("&".$ext_key[$ind].";","$value\n",$this-
>texto);
                ++$ind;
         }
        }
        $this->array_texto = split("\n",$this->texto);

         if (!xml_parse($parser, $this->texto,TRUE)) {
                $err_line = $this->array_texto[(xml_get_current_line_number($parser)-
1)];
                $err_col = xml_get_current_column_number($parser);
                $text1 = "<font color=\"blue\" size=\"3\" face=\"arial\">".htmlentities
(substr($err_line,0,($err_col -1)))."</font><font color=\"red\" size=\"3\" face=\"arial\">";
                $text2 = htmlentities(substr($err_line,($err_col),1))."</font><font
color=\"blue\" size=\"3\" face=\"arial\">";
                $text3 = htmlentities(substr($err_line,($err_col +1)))."<font>";
                $this->get_err = "<font color=\"black\" size=\"3\" face=\"arial\">Fonte do
documento: $document<br>"
                ."<b>XML error: </b>".xml_error_string(xml_get_error_code($parser))."
<b>at</b> line "
                .xml_get_current_line_number($parser)." and colunm $err_col<br>"
                ."<b> Texto: </b>$text1$text2$text3";
                $result = FALSE;
        }

        xml_parser_free($parser);
        return $result;
}

function start_element($parser,$element_name,$attributes){
$this->attribute = $attributes;
$this->dado = "";
$this->current_element = $element_name;

if(!in_array($element_name,$this->array_nodes)){
        $this->array_nodes[] = $element_name;
}

while(list($key,$value) = each($attributes)){
         $attr[] = $key;
        }
$this->array_attributes[$this->current_element] = $attr;

}

function end_element($parser,$element_name){
if(trim($this->dado) != ""){
        $this->array_element[$this->current_element][] = $this->dado;
}
reset($this->attribute);
$this->dado = "";
if(count($this->attribute)>0){
$this->array_attribute_value[$this->current_element][] = $this->attribute;
}
}


function character_data($parser,$data){
$this->dado .= $data;

}


function get_element_value($element,$ind = 0){
        return $this->array_element[$element][$ind];
}



function get_element_rows($element){
        return count($this->array_element[$element]);
}



function get_elements(){
        return $this->array_nodes;
}


function get_element_attribute($element,$ind = 0,$attribute){
        return $this->array_attribute_value[$element][$ind][$attribute];
}



function get_attributes($element){
        return $this->array_attributes[$element];
}

function view_source(){
        $retorno = htmlentities($this->texto);
        return str_replace("&gt;","&gt;<br>",$retorno);
}

}

?>

example to use XML easy parser:

<?
//Exemplo:

//Example:

include("./easy_parser.inc"); // file of easy_parser class

$xml = new easy_parser;
$result = $xml->parser("file.xml",true); // if source of document is not a file then use $result =
$xml->parser($var_source,false)
print $xml->view_source();
if($result){
$elements = $xml->get_elements();

print "<b><font face=\"arial\" size=\"3\" color=\"blue\"><br>Element list:<p></font>";

while(list($key,$value) = each($elements)){
print "&nbsp;&nbsp;$value<br>";
}

print "<p><font face=\"arial\" size=\"3\" color=\"blue\">Element value: <p></font>";

print "&nbsp;&nbsp;" . $xml->get_element_value("file",1) . "<p>";

print "<p><font face=\"arial\" size=\"3\" color=\"blue\">Element rows: <p></font>";

print "&nbsp;&nbsp;" . $xml->get_element_rows("file") . "<p>";

print "<p><font face=\"arial\" size=\"3\" color=\"blue\">Element attributes: <p></font>";

$attr = $xml->get_attributes("file");
while(list($key,$value) = each($attr)){
print "&nbsp;&nbsp;" . $value . "<br>";
}

print "<p><font face=\"arial\" size=\"3\" color=\"blue\">Value of attribute size: <p></font>";

print "&nbsp;&nbsp;" . $xml->get_element_attribute("file",0,"size") . "<p>";
}else{
print $xml->get_err;
}
?>
Source of file.xml:

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE document [
<!ELEMENT document (file+,obs+,dia)+>
<!ELEMENT file (#PCDATA)>
<!ELEMENT obs (#PCDATA)>
<!ELEMENT name (#PCDATA)>
<!ELEMENT age (#PCDATA)>
<!ATTLIST file
number CDATA #REQUIRED
size CDATA #REQUIRED
>
<!ATTLIST obs
data CDATA #REQUIRED
>
<!ENTITY data1 "04/12/2000">
<!ENTITY hora1 "10:08:20">
<!ENTITY data2 "05/12/2000">
<!ENTITY hora2 "16:20:30">
<!ENTITY ext1 SYSTEM "file2.xml">
<!ENTITY ext2 SYSTEM "file3.xml">
]>
<document>
<file number="1" size="20">Este é o file numero 1. A data é &data1; e a hora é
&hora1;</file>
<obs data="06/12/2000">chato!</obs>
<file number="2" size="25">Este é o file numero 2. A data é &data2; e a hora é
&hora2;</file>
<file number="3" size="30"><![CDATA[ oi mané!!!!]]></file>
<obs data="06/12/2000">chato!</obs>
&ext1;&ext2;
</document>

Source of file2.xml:

<age>24</age>
<age>25</age>

Source of file3.xml:

<name>Ze Mane</name>
<name>Rubens Barroso</name>



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