(PHP ActiveX) Update a String Property in XMP

Demonstrates how to open a JPG or TIF image file, access the XMP metadata, and update the value of a string property. (If the string property does not already exist, it is created.)

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

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

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

// Load a JPG or TIF image file.
$success = $xmp->LoadAppFile('qa_data/xmp/AJ_123642_1511.tif');
if ($success != 1) {
    print $xmp->LastErrorText . "\n";
    exit;
}

print 'Num embedded XMP docs: ' . $xmp->NumEmbedded . "\n";

// This example assumes that XMP metadata is already present in the image file.
if ($xmp->NumEmbedded == 0) {
    print 'No XMP metadata already exists..' . "\n";
    exit;
}

// Get the XMP metadata.

// xml is a Chilkat.Xml
$xml = $xmp->GetEmbedded(0);

// Show the XML:
print $xml->getXml() . "\n";

// Update (overwrite) a string property.
$xmp->AddSimpleStr($xml,'NumberofTimes','123');

$success = $xmp->SaveAppFile('qa_output/updated.tif');
if ($success != 1) {
    print $xmp->LastErrorText . "\n";
    exit;
}

print 'Success.' . "\n";

?>