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<?php |
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namespace WebThumbnailer\Utils; |
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/** |
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* Class UrlUtils |
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* |
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* Util class for operations on URL strings. |
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* |
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* @package WebThumbnailer\Utils |
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*/ |
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class UrlUtils |
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{ |
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/** |
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* Extract the domains from an URL. |
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* |
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* @param string $url Given URL. |
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* |
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* @return string Extracted domains, lowercase. |
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*/ |
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public static function getDomain($url) |
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{ |
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if (! parse_url($url, PHP_URL_SCHEME)) { |
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$url = 'http://' . $url; |
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} |
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return strtolower(parse_url($url, PHP_URL_HOST)); |
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} |
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/** |
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* Generate a relative URL from absolute local path. |
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* Example: |
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* - /home/website/resources/file.txt |
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* ====> |
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* - resources/file.txt |
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* |
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* @param array $server $_SERVER array. |
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* @param string $path Absolute path to transform. |
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* |
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* @return string Relative path. |
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*/ |
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public static function generateRelativeUrlFromPath($server, $path) |
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{ |
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if (isset($server['CONTEXT_DOCUMENT_ROOT'])) { |
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$root = ! empty($server['CONTEXT_DOCUMENT_ROOT']) ? rtrim($server['CONTEXT_DOCUMENT_ROOT'], '/') .'/' : ''; |
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$path = substr($path, strlen($root)); |
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} elseif (isset($server['DOCUMENT_ROOT'])) { |
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$root = ! empty($server['DOCUMENT_ROOT']) ? rtrim($server['DOCUMENT_ROOT'], '/') .'/' : ''; |
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$path = substr($path, strlen($root)); |
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} |
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if (isset($server['SCRIPT_NAME']) && preg_match('#/?(.+/)\w+\.php$#', $server['SCRIPT_NAME'], $matches) > 0) { |
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$path = substr($path, strlen($matches[1])); |
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} |
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return $path; |
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} |
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/** |
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* Retrieve the file extension from a URL. |
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* |
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* @param string $url given URL. |
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* |
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* @return string|bool File extension or false if not found. |
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*/ |
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public static function getUrlFileExtension($url) |
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{ |
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$path = parse_url($url, PHP_URL_PATH); |
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if (preg_match('/\.(\w+)$/i', $path, $match) > 0) { |
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return strtolower($match[1]); |
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} |
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return ''; |
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} |
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} |
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ArthurHoaro /
web-thumbnailer
