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✏️ Editing: class.snaplib.u.url.php

<?php
/**
 * Utility class used for working with URLs
 *
 * Standard: PSR-2
 * @link http://www.php-fig.org/psr/psr-2
 *
 * @package DupLiteSnapLib
 * @copyright (c) 2017, Snapcreek LLC
 * @license	https://opensource.org/licenses/GPL-3.0 GNU Public License
 *
 */
defined('ABSPATH') || defined('DUPXABSPATH') || exit;

if (!class_exists('DupLiteSnapLibURLU', false)) {

class DupLiteSnapLibURLU
    {

protected static $DEF_ARRAY_PARSE_URL = array(
            'scheme'   => false,
            'host'     => false,
            'port'     => false,
            'user'     => false,
            'pass'     => false,
            'path'     => '',
            'scheme'   => false,
            'query'    => false,
            'fragment' => false
        );

/**
         * Append a new query value to the end of a URL
         *
         * @param string $url   The URL to append the new value to
         * @param string $key   The new key name
         * @param string $value The new key name value
         *
         * @return string Returns the new URL with with the query string name and value
         */
        public static function appendQueryValue($url, $key, $value)
        {
            $separator    = (parse_url($url, PHP_URL_QUERY) == NULL) ? '?' : '&';
            $modified_url = $url."$separator$key=$value";

return $modified_url;
        }

/**
         * add www. in url if don't have
         * 
         * @param string $url
         * @return string
         */
        public static function wwwAdd($url)
        {
            return preg_replace('/^((?:\w+\:)?\/\/)(?!www\.)(.+)/', '$1www.$2', $url);
        }

/**
         * remove www. in url if don't have
         * 
         * @param string $url
         * @return string
         */
        public static function wwwRemove($url)
        {
            return preg_replace('/^((?:\w+\:)?\/\/)www\.(.+)/', '$1$2', $url);
        }

/**
         * Fetches current URL via php
         *
         * @param bool $queryString If true the query string will also be returned.
         * @param int $getParentDirLevel if 0 get current script name or parent folder, if 1 parent folder if 2 parent of parent folder ... 
         *
         * @returns The current page url
         */
        public static function getCurrentUrl($queryString = true, $requestUri = false, $getParentDirLevel = 0)
        {
            // *** HOST
            if (isset($_SERVER['HTTP_X_ORIGINAL_HOST'])) {
                $host = $_SERVER['HTTP_X_ORIGINAL_HOST'];
            } else {
                $host = isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : $_SERVER['SERVER_NAME']; //WAS SERVER_NAME and caused problems on some boxes
            }

// *** PROTOCOL
            if (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] === 'https') {
                $_SERVER ['HTTPS'] = 'on';
            }
            if (isset($_SERVER['HTTP_X_FORWARDED_SSL']) && $_SERVER['HTTP_X_FORWARDED_SSL'] === 'https') {
                $_SERVER ['HTTPS'] = 'on';
            }
            if (isset($_SERVER['HTTP_CF_VISITOR'])) {
                $visitor = json_decode($_SERVER['HTTP_CF_VISITOR']);
                if ($visitor->scheme == 'https') {
                    $_SERVER ['HTTPS'] = 'on';
                }
            }
            $protocol = 'http'.((isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) === 'on') ? 's' : '');

if ($requestUri) {
 $serverUrlSelf = preg_replace('/\?.*$/', '', $_SERVER['REQUEST_URI']);
 } else {
 // *** SCRIPT NAME
 $serverUrlSelf = $_SERVER['SCRIPT_NAME'];
 for ($i = 0; $i < $getParentDirLevel; $i++) {
 $serverUrlSelf = preg_match('/^[\\\\\/]?$/', dirname($serverUrlSelf)) ? '' : dirname($serverUrlSelf);
 }
 }

// *** QUERY STRING 
            $query = ($queryString && isset($_SERVER['QUERY_STRING']) && strlen($_SERVER['QUERY_STRING']) > 0 ) ? '?'.$_SERVER['QUERY_STRING'] : '';

return $protocol.'://'.$host.$serverUrlSelf.$query;
        }

/**
 * this function is a native PHP parse_url wrapper
 * this function returns an associative array with all the keys present and the values = false if they do not exist.
 * 
 * @param string $url The URL to parse. Invalid characters are replaced by _.
 * @param int $component
 * @return mixed On seriously malformed URLs, parse_url() may return <code>FALSE</code>.If the <code>component</code> parameter is omitted, an associative <code>array</code> is returned. At least one element will be present within the array. Potential keys within this array are:<ul> <li> scheme - e.g. http </li> <li> host </li> <li> port </li> <li> user </li> <li> pass </li> <li> path </li> <li> query - after the question mark &#63; </li> <li> fragment - after the hashmark # </li> </ul>If the <code>component</code> parameter is specified, parse_url() returns a <code>string</code> (or an <code>integer</code>, in the case of <code>PHP_URL_PORT</code>) instead of an <code>array</code>. If the requested component doesn't exist within the given URL, <code>NULL</code> will be returned.
 */
 public static function parseUrl($url, $component = -1)
 {
 $result = parse_url($url, $component);
 if (is_array($result)) {
 $result = array_merge(self::$DEF_ARRAY_PARSE_URL, $result);
 }

return $result;
        }

/**
         * this function build a url from array result of parse url.
         * if work with both parse_url native function result and snap parseUrl result
         * 
         * @param array $parts
         * @return bool|string return false if param isn't array
         */
        public static function buildUrl($parts)
        {
            if (!is_array($parts)) {
                return false;
            }

$result = '';
            $result .= (isset($parts['scheme']) && $parts['scheme'] !== false) ? $parts['scheme'].':' : '';
            $result .= (
                (isset($parts['user']) && $parts['user'] !== false) ||
                (isset($parts['host']) && $parts['host'] !== false)) ? '//' : '';

$result .= (isset($parts['user']) && $parts['user'] !== false) ? $parts['user'] : '';
            $result .= (isset($parts['pass']) && $parts['pass'] !== false) ? ':'.$parts['pass'] : '';
            $result .= (isset($parts['user']) && $parts['user'] !== false) ? '@' : '';

$result .= (isset($parts['host']) && $parts['host'] !== false) ? $parts['host'] : '';
            $result .= (isset($parts['port']) && $parts['port'] !== false) ? ':'.$parts['port'] : '';

$result .= (isset($parts['path']) && $parts['path'] !== false) ? $parts['path'] : '';
            $result .= (isset($parts['query']) && $parts['query'] !== false) ? '?'.$parts['query'] : '';
            $result .= (isset($parts['fragment']) && $parts['fragment'] !== false) ? '#'.$parts['fragment'] : '';

return $result;
        }

/**
         * encode alla chars
         * 
         * @param string $url
         * @return string
         */
        public static function urlEncodeAll($url)
        {
            $hex = unpack('H*', urldecode($url));
            return preg_replace('~..~', '%$0', strtoupper($hex[1]));
        }
    }
}

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