(PHP Extension) XMP Array Property - Bag, Seq, or Alt

How to insert or update an XMP array property (bag, seq, or alt).

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux, Solaris

<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

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

$xmp = new CkXmp();

// Load a JPG or TIF image file.
// Sample JPG's with XMP metadata may be found at:
// http://www.chilkatsoft.com/testData/xmp/sample1.jpg
// http://www.chilkatsoft.com/testData/xmp/sample2.jpg
// http://www.chilkatsoft.com/testData/xmp/sample3.jpg
$success = $xmp->LoadAppFile('sample1.jpg');
if ($success != true) {
    print $xmp->lastErrorText() . "\n";
    exit;
}

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

// Assuming there is at least one, get the 1st.
// (There is typically never more than one, but theoretically it's possible.)

// xml is a CkXml
$xml = $xmp->GetEmbedded(0);
if ($xmp->get_LastMethodSuccess() == true) {

    // Create an object to hold one or more string values.
    $sa = new CkStringArray();
    $success = $sa->Append('value_1');
    $success = $sa->Append('value_2');
    // ...

    $success = $xmp->AddArray($xml,'bag','Iptc4xmpCore:Chilkat',$sa);
    if ($success != true) {
        print $xmp->lastErrorText() . "\n";
    }
    else {
        // Save the JPG.
        $success = $xmp->SaveAppFile('modified.jpg');
        if ($success != true) {
            print $xmp->lastErrorText() . "\n";
        }

    }

}
else {
    print $xmp->lastErrorText() . "\n";
}


?>