Alert: This function’s access is marked private. This means it is not intended for use by plugin or theme developers, only in other core functions. It is listed here for completeness.

wp_fix_server_vars()

Fix $_SERVER variables for various setups.


Description Description


Source Source

File: wp-includes/load.php

function wp_fix_server_vars() {
	global $PHP_SELF;

	$default_server_values = array(
		'SERVER_SOFTWARE' => '',
		'REQUEST_URI'     => '',
	);

	$_SERVER = array_merge( $default_server_values, $_SERVER );

	// Fix for IIS when running with PHP ISAPI
	if ( empty( $_SERVER['REQUEST_URI'] ) || ( PHP_SAPI != 'cgi-fcgi' && preg_match( '/^Microsoft-IIS\//', $_SERVER['SERVER_SOFTWARE'] ) ) ) {

		if ( isset( $_SERVER['HTTP_X_ORIGINAL_URL'] ) ) {
			// IIS Mod-Rewrite
			$_SERVER['REQUEST_URI'] = $_SERVER['HTTP_X_ORIGINAL_URL'];
		} elseif ( isset( $_SERVER['HTTP_X_REWRITE_URL'] ) ) {
			// IIS Isapi_Rewrite
			$_SERVER['REQUEST_URI'] = $_SERVER['HTTP_X_REWRITE_URL'];
		} else {
			// Use ORIG_PATH_INFO if there is no PATH_INFO
			if ( ! isset( $_SERVER['PATH_INFO'] ) && isset( $_SERVER['ORIG_PATH_INFO'] ) ) {
				$_SERVER['PATH_INFO'] = $_SERVER['ORIG_PATH_INFO'];
			}

			// Some IIS + PHP configurations puts the script-name in the path-info (No need to append it twice)
			if ( isset( $_SERVER['PATH_INFO'] ) ) {
				if ( $_SERVER['PATH_INFO'] == $_SERVER['SCRIPT_NAME'] ) {
					$_SERVER['REQUEST_URI'] = $_SERVER['PATH_INFO'];
				} else {
					$_SERVER['REQUEST_URI'] = $_SERVER['SCRIPT_NAME'] . $_SERVER['PATH_INFO'];
				}
			}

			// Append the query string if it exists and isn't null
			if ( ! empty( $_SERVER['QUERY_STRING'] ) ) {
				$_SERVER['REQUEST_URI'] .= '?' . $_SERVER['QUERY_STRING'];
			}
		}
	}

	// Fix for PHP as CGI hosts that set SCRIPT_FILENAME to something ending in php.cgi for all requests
	if ( isset( $_SERVER['SCRIPT_FILENAME'] ) && ( strpos( $_SERVER['SCRIPT_FILENAME'], 'php.cgi' ) == strlen( $_SERVER['SCRIPT_FILENAME'] ) - 7 ) ) {
		$_SERVER['SCRIPT_FILENAME'] = $_SERVER['PATH_TRANSLATED'];
	}

	// Fix for Dreamhost and other PHP as CGI hosts
	if ( strpos( $_SERVER['SCRIPT_NAME'], 'php.cgi' ) !== false ) {
		unset( $_SERVER['PATH_INFO'] );
	}

	// Fix empty PHP_SELF
	$PHP_SELF = $_SERVER['PHP_SELF'];
	if ( empty( $PHP_SELF ) ) {
		$_SERVER['PHP_SELF'] = preg_replace( '/(\?.*)?$/', '', $_SERVER['REQUEST_URI'] );
		$PHP_SELF            = $_SERVER['PHP_SELF'];
	}
}

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Version Description
3.0.0 Introduced.

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