xml_parse_into_struct

(PHP 4, PHP 5, PHP 7)

xml_parse_into_struct — �� XML ��ݽ��

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xml_parse_into_struct ( resource $parser , string $data , array &$values [, array &$index ] ) : int

�ú�� XML �ļ��Ӧ��У�index ��ָ�� values ��ж�Ӧֵ��ָ�롣��ָ�봫�ݸ��

Note:
xml_parse_into_struct() ʧ�ܷ�� 0��ɹ�� 1�� FALSE �� TRUE ��ͬ��ʹ�� === ��ʱҪע�⡣

��·��ʾ��ɸú��ɵ��ڲ��ṹ��Ǽ򵥵ؽ�һ�� note Ƕ�뵽һ�� para ��У��ǿ��Դ�ӡ��ɵ��Ľṹ��

Example #1 xml_parse_into_struct() ʾ��


<?php
$simple = "<para><note>simple note</note></para>";
$p = xml_parser_create();
xml_parse_into_struct($p, $simple, $vals, $index);
xml_parser_free($p);
echo "Index array\n";
print_r($index);
echo "\nVals array\n";
print_r($vals);
?>

��ϴ��룬��ǵõ��ǣ�

Index array
Array
(
    [PARA] => Array
        (
            [0] => 0
            [1] => 2
        )

    [NOTE] => Array
        (
            [0] => 1
        )

)

Vals array
Array
(
    [0] => Array
        (
            [tag] => PARA
            [type] => open
            [level] => 1
        )

    [1] => Array
        (
            [tag] => NOTE
            [type] => complete
            [level] => 2
            [value] => simple note
        )

    [2] => Array
        (
            [tag] => PARA
            [type] => close
            [level] => 1
        )

)

�� XML �ĵ��ܸ��ӣ��ڸ��ĵ��¼��Event-driven�� expat ��չ�⣩Ҳ��Ӧ�ı�ø��ӡ��ú��ɵĲ�� DOM ��Ķ��󣬶��Ǻ��״�ṹ��ˣ��ܹ��Ľ�� XML �ļ��ݵĶ��Ǽ�� XML �ļ��ʾһ��ڰ��Ϣ��С��ݿ⣺

Example #2 moldb.xml - ��Ϣ��С��ݿ�

<?xml version="1.0"?>
<moldb>

    <molecule>
        <name>Alanine</name>
        <symbol>ala</symbol>
        <code>A</code>
        <type>hydrophobic</type>
    </molecule>

    <molecule>
        <name>Lysine</name>
        <symbol>lys</symbol>
        <code>K</code>
        <type>charged</type>
    </molecule>

</moldb>

��ǽ��ĵ��Ӧ��Ĵ��룺

Example #3 parsemoldb.php - �� moldb.xml ��ӣ�molecular��


<?php

class AminoAcid {
    var $name;  // aa ����
    var $symbol;    // ����ĸ����
    var $code;  // ����ĸ����
    var $type;  // hydrophobic, charged �� neutral

    function AminoAcid ($aa)
    {
        foreach ($aa as $k=>$v)
            $this->$k = $aa[$k];
    }
}

function readDatabase($filename)
{
    // ��ȡ aminoacids �� XML ����
    $data = implode("",file($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);

    // ���� XML �ṹ
    foreach ($tags as $key=>$val) {
        if ($key == "molecule") {
            $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);
}

$db = readDatabase("moldb.xml");
echo "** Database of AminoAcid objects:\n";
print_r($db);

?>

��ִ�� parsemoldb.php �󣬱�� $db ��һ�� AminoAcid ��ɵ��飬�ýű��£�

** Database of AminoAcid objects:
Array
(
    [0] => aminoacid Object
        (
            [name] => Alanine
            [symbol] => ala
            [code] => A
            [type] => hydrophobic
        )

    [1] => aminoacid Object
        (
            [name] => Lysine
            [symbol] => lys
            [code] => K
            [type] => charged
        )

)