PHP Extension

Paging User Photos with Cursor

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Demonstrates how to iterate over the pages of user photos using a cursor. PHP Extension

<?php

include("chilkat.php");

$success = false;

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

// This example assumes a previously obtained an access token
$oauth2 = new CkOAuth2();
$oauth2->put_AccessToken('FACEBOOK-ACCESS-TOKEN');

$rest = new CkRest();

// Connect to Facebook.
$success = $rest->Connect('graph.facebook.com',443,true,true);
if ($success != true) {
    print $rest->lastErrorText() . "\n";
    exit;
}

// Provide the authentication credentials (i.e. the access key)
$rest->SetAuthOAuth2($oauth2);

// Indicate that we only want the photos the user has personally uploaded.
$rest->AddQueryParam('type','uploaded');

// We could limit the number of photos per page using the "limit" field.
$rest->AddQueryParam('limit','20');

// Get the 1st page of photos. (Not the actual image data, but the information about each photo.)
// See https://developers.facebook.com/docs/graph-api/reference/user/photos/ for more information.
$responseJson = $rest->fullRequestNoBody('GET','/v2.7/me/photos');
if ($rest->get_LastMethodSuccess() != true) {
    print $rest->lastErrorText() . "\n";
    exit;
}

$json = new CkJsonObject();
$json->put_EmitCompact(false);
$json->Load($responseJson);
print $json->emit() . "\n";

// 
// See Parsing the Facebook User Photos for code showing how to parse the JSON photos content.
// 

// Get the "after" cursor.
$afterCursor = $json->stringOf('paging.cursors.after');
while ($json->get_LastMethodSuccess() == true) {

    print 'after cursor: ' . $afterCursor . "\n";

    // Prepare for getting the next page of photos.
    // We can continue using the same REST object.
    // If already connected, we'll continue using the existing connection.
    // Otherwise, a new connection will automatically be made if needed.
    $rest->ClearAllQueryParams();
    $rest->AddQueryParam('type','uploaded');
    $rest->AddQueryParam('limit','20');
    $rest->AddQueryParam('after',$afterCursor);

    $responseJson = $rest->fullRequestNoBody('GET','/v2.7/me/photos');
    if ($rest->get_LastMethodSuccess() != true) {
        print $rest->lastErrorText() . "\n";
        exit;
    }

    $json->Load($responseJson);
    // See Parsing the Facebook User Photos for code showing how to parse the JSON photos content.

    print $json->emit() . "\n";

    // Get the cursor for the next page.
    $afterCursor = $json->stringOf('paging.cursors.after');
}

print 'No more pages of photos.' . "\n";

?>