PHP Extension

XML SearchForAttribute Method

See more XML Examples

Demonstrates the SearchForAttribute method.

The input XML, available at http://www.chilkatsoft.com/data/fruitSearch.xml, is this:

<root>
    <searchRoot>
        <fruit color="red">apple</fruit>
        <fruit color="green">pear</fruit>
        <veg color="orange">carrot</veg>
        <meat animal="cow">beef</meat>
        <xyz>
            <fruit color="blue">blueberry</fruit>
            <veg color="green">broccoli</veg>
        </xyz>
        <fruit color="purple">grape</fruit>
        <cheese color="yellow">cheddar</cheese>
    </searchRoot>
    <fruit color="red">strawberry</fruit>
    <fruit color="orange">peach</fruit>
</root>

PHP Extension

<?php

include("chilkat.php");

$success = false;

$xml = new CkXml();

$success = $xml->LoadXmlFile('qa_data/xml/fruitSearch.xml');
if ($success != true) {
    print $xml->lastErrorText() . "\n";
    exit;
}

// Search the sub-tree rooted at "searchRoot"
// xSearchRoot is a CkXml
$xSearchRoot = $xml->FindChild('searchRoot');
if ($xml->get_LastMethodSuccess() == false) {
    print 'searchRoot not found, searching from root.' . "\n";
    // xSearchRoot is a CkXml
    $xSearchRoot = $xml->GetRoot();
}

// Search for all "fruit" nodes having a color attribute
// where the name of the color ends in "e"
// xBeginAfter is a CkXml
$xBeginAfter = $xSearchRoot->GetSelf();
// xFound is a CkXml
$xFound = $xSearchRoot->SearchForAttribute($xBeginAfter,'fruit','color','*e');
while (($xSearchRoot->get_LastMethodSuccess() == true)) {

    print $xFound->content() . ': ' . $xFound->getAttrValue('color') . "\n";

    // xBeginAfter is a CkXml
    $xBeginAfter = $xFound;
    // xFound is a CkXml
    $xFound = $xSearchRoot->SearchForAttribute($xBeginAfter,'fruit','color','*e');
}

// The correct output is:
// grape: purple
// blueberry: blue

print '--------------------------' . "\n";

// ---------------------------------------------------------------------------------
// Now do the same, but instead use SearchForAttribute2
// which updates the internal reference of the caller instead
// of returning the found node.

// xBeginAfter is a CkXml
$xBeginAfter = $xSearchRoot->GetSelf();
// xSearch is a CkXml
$xSearch = $xSearchRoot->GetSelf();

$success = $xSearch->SearchForAttribute2($xBeginAfter,'fruit','color','*e');
while ($success == true) {

    print $xSearch->content() . ': ' . $xSearch->getAttrValue('color') . "\n";

    // Copy the internal references so that the next search
    // begins after the found node.
    $xBeginAfter->CopyRef($xSearch);
    $xSearch->CopyRef($xSearchRoot);

    $success = $xSearch->SearchForAttribute2($xBeginAfter,'fruit','color','*e');
}


?>