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<?php
// See https://github.com/jakeasmith/http_build_url/blob/master/src/http_build_url.php
if (!function_exists('http_build_url')) {
/**
* URL constants as defined in the PHP Manual under "Constants usable with
* http_build_url()".
*
* @see http://us2.php.net/manual/en/http.constants.php#http.constants.url
*/
if (!defined('HTTP_URL_REPLACE')) {
define('HTTP_URL_REPLACE', 1);
}
if (!defined('HTTP_URL_JOIN_PATH')) {
define('HTTP_URL_JOIN_PATH', 2);
}
if (!defined('HTTP_URL_JOIN_QUERY')) {
define('HTTP_URL_JOIN_QUERY', 4);
}
if (!defined('HTTP_URL_STRIP_USER')) {
define('HTTP_URL_STRIP_USER', 8);
}
if (!defined('HTTP_URL_STRIP_PASS')) {
define('HTTP_URL_STRIP_PASS', 16);
}
if (!defined('HTTP_URL_STRIP_AUTH')) {
define('HTTP_URL_STRIP_AUTH', 32);
}
if (!defined('HTTP_URL_STRIP_PORT')) {
define('HTTP_URL_STRIP_PORT', 64);
}
if (!defined('HTTP_URL_STRIP_PATH')) {
define('HTTP_URL_STRIP_PATH', 128);
}
if (!defined('HTTP_URL_STRIP_QUERY')) {
define('HTTP_URL_STRIP_QUERY', 256);
}
if (!defined('HTTP_URL_STRIP_FRAGMENT')) {
define('HTTP_URL_STRIP_FRAGMENT', 512);
}
if (!defined('HTTP_URL_STRIP_ALL')) {
define('HTTP_URL_STRIP_ALL', 1024);
}
/**
* Build a URL.
*
* The parts of the second URL will be merged into the first according to
* the flags argument.
*
* @param mixed $url (part(s) of) an URL in form of a string or
* associative array like parse_url() returns
* @param mixed $parts same as the first argument
* @param int $flags a bitmask of binary or'ed HTTP_URL constants;
* HTTP_URL_REPLACE is the default
* @param array $new_url if set, it will be filled with the parts of the
* composed url like parse_url() would return
* @return string
*/
function http_build_url($url, $parts = array(), $flags = HTTP_URL_REPLACE, &$new_url = array()) {
is_array($url) || $url = parse_url($url);
is_array($parts) || $parts = parse_url($parts);
isset($url['query']) && is_string($url['query']) || $url['query'] = null;
isset($parts['query']) && is_string($parts['query']) || $parts['query'] = null;
$keys = array('user', 'pass', 'port', 'path', 'query', 'fragment');
// HTTP_URL_STRIP_ALL and HTTP_URL_STRIP_AUTH cover several other flags.
if ($flags & HTTP_URL_STRIP_ALL) {
$flags |= HTTP_URL_STRIP_USER | HTTP_URL_STRIP_PASS
| HTTP_URL_STRIP_PORT | HTTP_URL_STRIP_PATH
| HTTP_URL_STRIP_QUERY | HTTP_URL_STRIP_FRAGMENT;
} elseif ($flags & HTTP_URL_STRIP_AUTH) {
$flags |= HTTP_URL_STRIP_USER | HTTP_URL_STRIP_PASS;
}
// Schema and host are alwasy replaced
foreach (array('scheme', 'host') as $part) {
if (isset($parts[$part])) {
$url[$part] = $parts[$part];
}
}
if ($flags & HTTP_URL_REPLACE) {
foreach ($keys as $key) {
if (isset($parts[$key])) {
$url[$key] = $parts[$key];
}
}
} else {
if (isset($parts['path']) && ($flags & HTTP_URL_JOIN_PATH)) {
if (isset($url['path']) && substr($parts['path'], 0, 1) !== '/') {
$url['path'] = rtrim(
str_replace(basename($url['path']), '', $url['path']),
'/'
) . '/' . ltrim($parts['path'], '/');
} else {
$url['path'] = $parts['path'];
}
}
if (isset($parts['query']) && ($flags & HTTP_URL_JOIN_QUERY)) {
if (isset($url['query'])) {
parse_str($url['query'], $url_query);
parse_str($parts['query'], $parts_query);
$url['query'] = http_build_query(
array_replace_recursive(
$url_query,
$parts_query
)
);
} else {
$url['query'] = $parts['query'];
}
}
}
foreach ($keys as $key) {
$strip = 'HTTP_URL_STRIP_' . strtoupper($key);
if ($flags & constant($strip)) {
unset($url[$key]);
}
}
$parsed_string = '';
if (isset($url['scheme'])) {
$parsed_string .= $url['scheme'] . '://';
}
if (isset($url['user'])) {
$parsed_string .= $url['user'];
if (isset($url['pass'])) {
$parsed_string .= ':' . $url['pass'];
}
$parsed_string .= '@';
}
if (isset($url['host'])) {
$parsed_string .= $url['host'];
}
if (isset($url['port'])) {
$parsed_string .= ':' . $url['port'];
}
if (!empty($url['path'])) {
$parsed_string .= $url['path'];
} else {
$parsed_string .= '/';
}
if (isset($url['query'])) {
$parsed_string .= '?' . $url['query'];
}
if (isset($url['fragment'])) {
$parsed_string .= '#' . $url['fragment'];
}
$new_url = $url;
return $parsed_string;
}
}