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(PHP ActiveX) Find and Update an XML Attribute Value

See more XML Examples

Demonstrates how to find an element in XML with a specified attribute name and then update the attribute value.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// Let's say you have 2 XML files with identical structures as shown directly below,
// and you wish to update the values in the 1st XML file with those in the 2nd XML file.

// <global>
//     <phrase id="2FADisabled" value="2factor authentication disabled"/>
//     <phrase id="2FAEnabled" value="2factor authentication enabled"/>
//     <phrase id="2FAResetFailed" value="Failed to disable two factor authentication"/>
// </global>

// <global>
//     <phrase id="2FAResetFailed" value="Failed to reset two factor authentication"/>
//     <phrase id="2FADisabled" value="2FA authentication disabled"/>
//     <phrase id="2FAEnabled" value="2FA authentication enabled"/>
// </global>

// First, initialize each of the Chilkat XML objects.
// These could be loaded from files, but we'll just create them manually for this example..

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Xml')
$xml1 = new COM("Chilkat.Xml");
$xml1->Tag = 'global';
$xml1->UpdateAttrAt('phrase',1,'id','2FADisabled');
$xml1->UpdateAttrAt('phrase',1,'value','2factor authentication disabled');
$xml1->UpdateAttrAt('phrase[1]',1,'id','2FAEnabled');
$xml1->UpdateAttrAt('phrase[1]',1,'value','2factor authentication enabled');
$xml1->UpdateAttrAt('phrase[2]',1,'id','2FAResetFailed');
$xml1->UpdateAttrAt('phrase[2]',1,'value','Failed to disable two factor authentication');

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Xml')
$xml2 = new COM("Chilkat.Xml");
$xml2->Tag = 'global';
$xml2->UpdateAttrAt('phrase',1,'id','2FAResetFailed');
$xml2->UpdateAttrAt('phrase',1,'value','Failed to reset two factor authentication');
$xml2->UpdateAttrAt('phrase[1]',1,'id','2FADisabled');
$xml2->UpdateAttrAt('phrase[1]',1,'value','2FA authentication disabled');
$xml2->UpdateAttrAt('phrase[2]',1,'id','2FAEnabled');
$xml2->UpdateAttrAt('phrase[2]',1,'value','2FA authentication enabled');

// Iterate over attribute values in xml2 and update the same in xml1.

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder')
$sbPath = new COM("Chilkat.StringBuilder");

$i = 0;
$count_i = $xml2->NumChildrenHavingTag('phrase');
while ($i < $count_i) {
    $xml2->I = $i;
    $phrase_id = $xml2->chilkatPath('phrase[i]|(id)');
    $phrase_value = $xml2->chilkatPath('phrase[i]|(value)');

    // Notice how the UpdateAttrAt method's 1st argument is a Chilkat path -- which is an expression
    // to find the location of the XML element to be updated.
    // Here we create a path of the form "/A/tagName,attributeName,attributeValuePattern", which means
    // find the direct descendent of xml2 having tag=tagName, with an attribute=attributeName where the attribute value
    // matches the attributeValuePattern.  If attributeValuePattern does not contain a "*", then it must match directly.
    // We'll build a Chilkat path such as "/A/phrase,id,2FADisabled"
    $sbPath->SetString('/A/phrase,id,');
    $sbPath->Append($phrase_id);

    // This assumes the corresponding element exists in xml1.
    $xml1->UpdateAttrAt($sbPath->getAsString(),1,'value',$phrase_value);

    $i = $i + 1;
}

// Now see how xml1 has been updated..
print $xml1->getXml() . "\n";

// <global>
//     <phrase id="2FADisabled" value="2FA authentication disabled"/>
//     <phrase id="2FAEnabled" value="2FA authentication enabled"/>
//     <phrase id="2FAResetFailed" value="Failed to reset two factor authentication"/>
// </global>

?>

 

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