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<?php |
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declare(strict_types=1); |
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namespace Selami\Stdlib; |
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class BaseUrlExtractor |
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{ |
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public static function getBaseUrl(array $httpServerData) : string |
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{ |
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$protocol = self::getProtocol($httpServerData); |
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$host = self::getHost($httpServerData); |
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$uriPath = $httpServerData['REQUEST_URI'] ?? ''; |
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$filename = $httpServerData['SCRIPT_FILENAME'] ?? ''; |
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$scriptName = $httpServerData['SCRIPT_NAME']; |
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$phpSelf = $httpServerData['PHP_SELF']; |
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$origScriptName = $httpServerData['ORIG_SCRIPT_NAME'] ?? ''; |
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$baseUrl = self::getRelativeBaseUrl($scriptName, $phpSelf, $filename, $origScriptName); |
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return trim(self::determineFullBaseUrl($baseUrl, $protocol, $host, $uriPath), '/'); |
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} |
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public static function determineFullBaseUrl($baseUrl, $protocol, $host, $uriPath): string |
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{ |
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// If the baseUrl is empty, then ply return it |
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if (empty($baseUrl)) { |
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return $protocol . '://' . $host.''; |
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} |
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// Full base URL matches. |
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if (0 === strpos($uriPath, $baseUrl)) { |
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return $protocol . '://' . $host.$baseUrl; |
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} |
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// Directory portion of base path matches. |
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$baseDir = str_replace('\\', '/', dirname($baseUrl)); |
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if (0 === strpos($uriPath, $baseDir)) { |
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return $protocol . '://' . $host.$baseDir; |
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} |
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$basename = basename($baseUrl); |
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// No match whatsoever |
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if (empty($basename) || false === strpos($uriPath, $basename)) { |
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return $protocol . '://' . $host; |
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} |
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// If using mod_rewrite or ISAPI_Rewrite strip the script filename |
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// out of the base path. $pos !== 0 makes sure it is not matching a |
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// value from PATH_INFO or QUERY_STRING. |
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if ((false !== ($pos = strpos($uriPath, $baseUrl)) && $pos !== 0) && strlen($uriPath) >= strlen($baseUrl) |
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) { |
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$baseUrl = substr($uriPath, 0, $pos + strlen($baseUrl)); |
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} |
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return trim($protocol . '://' . $host .$baseUrl, '/'); |
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} |
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public static function getProtocol(array $httpServerData) : string |
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{ |
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return isset($httpServerData['HTTPS']) && $httpServerData['HTTPS'] !== 'Off' ? 'https': 'http'; |
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} |
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public static function getHost($httpServerData) : string |
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{ |
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return $httpServerData['HTTP_HOST']; |
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} |
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public static function getRelativeBaseUrl($scriptName, $phpSelf, $filename, $origScriptName) : string |
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{ |
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if ($scriptName !== null && basename($scriptName) === $filename) { |
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return $scriptName; |
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} |
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if ($phpSelf !== null && basename($phpSelf) === $filename) { |
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return $phpSelf; |
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} |
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if ($origScriptName !== null && basename($origScriptName) === $filename) { |
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// 1and1 shared hosting compatibility. |
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return $origScriptName; |
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} |
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// Backtrack up the SCRIPT_FILENAME to find the portion |
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// matching PHP_SELF. |
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$baseUrl = '/'; |
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$basename = basename($filename); |
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if ($basename) { |
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$path = ($phpSelf ? trim($phpSelf, '/') : ''); |
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$basePos = strpos($path, $basename) ?: 0; |
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$baseUrl .= substr($path, 0, $basePos) . $basename; |
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} |
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return $baseUrl; |
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} |
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} |
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selamiphp /
stdlib
