PHP中用XML作配置文件(config.xml)

本文实现PHP解析config.xml配置文件，从中读取连接数据库所需的信息

config.xml

-------------------------------------------

<?xml version="1.0"?>

<configs>

    <database>

      <host>192.168.0.1</host>

      <dbname>dbname</dbname>

      <username>postgres</username>

      <password>123456</password>

    </database>

</configs>

 

解析文件parse.php

-------------------------------------------

<?php

class AminoAcid {

  

   function AminoAcid ($aa) {

       foreach ($aa as $k=>$v)

           $this->$k = $aa[$k];

   }

}

 

function readDatabase($filename) {

   // read the xml database of aminoacids

   $data = implode("",file($filename));

   $parser = xml_parser_create();

   xml_parser_set_option($parser,XML_OPTION_CASE_FOLDING,0);

   xml_parser_set_option($parser,XML_OPTION_SKIP_WHITE,1);

   xml_parse_into_struct($parser,$data,$values,$tags);

   xml_parser_free($parser);

   // loop through the structures

   foreach ($tags as $key=>$val) {

       if ($key == "database") {

           $molranges = $val;

           // each contiguous pair of array entries are the

           // lower and upper range for each molecule definition

           for ($i=0; $i < count($molranges); $i+=2) {

               $offset = $molranges[$i] + 1;

               $len = $molranges[$i + 1] - $offset;

               $tdb[] = parseMol(array_slice($values, $offset, $len));

           }

       } else {

           continue;

       }

   }

   return $tdb;

}

 

function parseMol($mvalues) {

   for ($i=0; $i < count($mvalues); $i++)

       $mol[$mvalues[$i]["tag"]] = $mvalues[$i]["value"];

   return new AminoAcid($mol);

   //Return $mol;

}

 

$db = readDatabase("config.xml");

/*

echo("<pre>");

print_r($db);

echo("</pre>");

*/

foreach($db as $key=>$val)

{

    echo($val->host);

}

?>

 

 

本文地址：http://com.8s8s.com/it/it28317.htm