PHP

Access a Part in a Multipart MIME Entity

Demonstrates the Chilkat Mime.PartAt method, which provides live access to the direct child at a zero-based index. The first argument is the index and the second is a Mime object that will reference the child. Modifying it modifies the child stored in the parent tree.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This is how you reach into a multipart message to inspect or edit an individual part — read a part's Content-Type, extract an attachment's body, or change a part in place. The key point is that the returned Mime is a live reference, not a copy, so edits to it flow back into the parent tree. Loop from 0 to NumParts - 1 to visit every direct child.

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<?php

use Chilkat2\Mime;

$mime = new Mime();
try {
    $mime->LoadMimeFile('qa_data/multipart_message.eml');
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

// PartAt provides LIVE access to a direct child part.  The 1st argument is the zero-based index
// and the 2nd is a Mime object that will reference the child.  Modifying it modifies the child in
// the parent tree.
$n = $mime->NumParts;
echo 'Number of parts: ', $n, "\n";

$part = new Mime();
for ($i = 0; $i < $n; $i++) {
    try {
        $mime->PartAt($i, $part);
    } catch (\Chilkat2\Exception $e) {
        echo $e->getMessage(), "\n";
        exit;
    }

    echo 'Part ', $i, ' Content-Type: ', $part->ContentType, "\n";
}