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return self::$handle;

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}

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public static function getFormattedHeaders($headers)

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{

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$formattedHeaders = array();

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$combinedHeaders = array_change_key_case(array_merge(self::$defaultHeaders, (array) $headers));

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foreach ($combinedHeaders as $key => $val) {

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$formattedHeaders[] = self::getHeaderString($key, $val);

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}

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if (!array_key_exists('user-agent', $combinedHeaders)) {

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$formattedHeaders[] = 'user-agent: unirest-php/2.0';

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}

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if (!array_key_exists('expect', $combinedHeaders)) {

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$formattedHeaders[] = 'expect:';

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}

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return $formattedHeaders;

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}

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private static function getArrayFromQuerystring($query)

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{

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$query = preg_replace_callback('/(?:^|(?<=&))[^=[]+/', function ($match) {

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return bin2hex(urldecode($match[0]));

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}, $query);

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parse_str($query, $values);

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return array_combine(array_map('hex2bin', array_keys($values)), $values);

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}

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/**

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* Ensure that a URL is encoded and safe to use with cURL

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* @param string $url URL to encode

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* @return string

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private static function encodeUrl($url)

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{

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$url_parsed = parse_url($url);

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$scheme = $url_parsed['scheme'] . '://';

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$host = $url_parsed['host'];

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$port = (isset($url_parsed['port']) ? $url_parsed['port'] : null);

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$path = (isset($url_parsed['path']) ? $url_parsed['path'] : null);

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$query = (isset($url_parsed['query']) ? $url_parsed['query'] : null);

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if ($query !== null) {

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$query = '?' . http_build_query(self::getArrayFromQuerystring($query));

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}

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if ($port && $port[0] !== ':') {

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$port = ':' . $port;

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}

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$result = $scheme . $host . $port . $path . $query;

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return $result;

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}

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private static function getHeaderString($key, $val)

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{

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$key = trim(strtolower($key));

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return $key . ': ' . $val;

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}

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/**

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* @param array $existing_options

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* @param array $new_options

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* @return array

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private static function mergeCurlOptions(&$existing_options, $new_options)

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{

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$existing_options = $new_options + $existing_options;

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return $existing_options;

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}

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}

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