postToFlickr.php

<?php

# Licensed under a CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
# http://creativecommons.org/publicdomain/zero/1.0/

function postToFlickr($data=array()) {

    $api_key = 'XXX';
    $api_secret = 'XXXX';
    $auth_token = 'XXXX';

    $url = 'https://up.flickr.com/services/upload/';

    $arguments = array(
        'api_key'       => $api_key,
        'auth_token'    => $api_secret,
        'content_type'  => 1,
        'description'   => '',
        'hidden'        => 1,
        'is_public'     => 1,
        'safety_level'  => 1,
        'tags'          => '',
        'title'         => ''
    );

    foreach ($data as $key => $value) {
        if (array_key_exists($key, $arguments)) {
            $arguments[$key] = $value;
        }
    }

    $sig_string = $auth_token;
    foreach($arguments as $key => $value) {
        $sig_string.= $key;
        $sig_string.= $value;
    }
    $api_sig = md5($sig_string);

    $arguments['photo'] = $data['photo'];
    $arguments['api_sig'] = $api_sig;

    $options = array(
        CURLOPT_HEADER => FALSE,
        CURLOPT_RETURNTRANSFER => TRUE,
        CURLOPT_POST => TRUE,
        CURLOPT_POSTFIELDS => $arguments,
        CURLOPT_URL => $url,
        CURLOPT_TIMEOUT => 20,
        CURLOPT_SSL_VERIFYPEER => 0,
        CURLOPT_HTTPHEADER => array('Expect:'),
        CURLOPT_USERAGENT => 'adactio.com',
    );

    $curl = curl_init();
    curl_setopt_array($curl, $options);
    $result = curl_exec($curl);
    curl_close($curl);

    return json_decode(json_encode((array)simplexml_load_string($result)), true);

}

?>