PHP obtains the complete URL of the current page through the pre-defined variable $ _ SERVER. $ _ SERVER is an array containing header information, path, and file location, which is created by the web SERVER, if you use the command line to run PHP, then $ _ SERVER is completely
PHP obtains the complete URL of the current page through the pre-defined variable $ _ SERVER. $ _ SERVER is an array containing header information, path, and file location, which is created by the web SERVER, if you use the command line to run PHP, $ _ SERVER is completely invalid.
Description of elements in the $ _ SERVER array:
- $ _ SERVER ['php _ SELF '] # file name of the script being executed, which is related to document root.
- $ _ SERVER ['argv'] # parameters passed to the script.
- $ _ SERVER ['argc '] # contains the number of command line parameters passed to the program (if running in command line mode ).
- $ _ SERVER ['gateway _ interface'] # The CGI standard version used by the SERVER. For example, "CGI/1.1 ".
- $ _ SERVER ['server _ name'] # NAME of the SERVER host where the script is currently running.
- $ _ SERVER ['server _ soft'] # The string identified by the SERVER, which is provided in the header of the response request.
- $ _ SERVER ['server _ protocol'] # name and version of the communication PROTOCOL used to request the page. For example, "HTTP/1.0 ".
- $ _ SERVER ['request _ method'] # request method for accessing the page. For example, "GET", "HEAD", "POST", and "PUT ".
- $ _ SERVER ['query _ string'] # query string.
- $ _ SERVER ['document _ root'] # ROOT directory of the DOCUMENT where the script is currently running. Defined in the server configuration file.
- $ _ SERVER ['http _ ACCEPT '] # Accept of the current request: content in the header.
- $ _ SERVER ['http _ ACCEPT_CHARSET '] # Accept-Charset of the current request: content in the header. For example, "iso-8859-1, *, utf-8 ".
- $ _ SERVER ['http _ ACCEPT_ENCODING '] # Accept-Encoding of the current request: content in the header. For example, "gzip ".
- $ _ SERVER ['http _ ACCEPT_LANGUAGE '] # Accept-Language of the current request: content in the header. For example, "en ".
- $ _ SERVER ['http _ connection'] # CONNECTION of the current request: content in the header. For example, "Keep-Alive ".
- $ _ SERVER ['http _ host'] # HOST of the current request: content in the header.
- $ _ SERVER ['http _ referer'] # Link to the URL of the previous page of the current page.
- $ _ SERVER ['http _ USER_AGENT '] # User_Agent of the current request: content in the header.
- $ _ SERVER ['https']-if accessed through HTTPS, it is set to a non-null value (on); otherwise, off is returned.
- $ _ SERVER ['remote _ ADDR '] # The IP address of the user on the current page is being viewed.
- $ _ SERVER ['remote _ host'] # the HOST name of the user browsing the current page.
- $ _ SERVER ['remote _ port'] # The PORT used by the user to connect to the SERVER.
- $ _ SERVER ['script _ filename'] # The absolute path name of the currently executed SCRIPT.
- $ _ SERVER ['server _ admin'] # Administrator information
- $ _ SERVER ['server _ port'] # PORT used by the SERVER
- $ _ SERVER ['server _ SIGNATURE '] # a string containing the SERVER version and virtual host name.
- $ _ SERVER ['path _ TRANSLATED '] # Basic PATH of the file system where the current script is located (not the root directory of the document.
- $ _ SERVER ['script _ name'] # contains the path of the current SCRIPT. This is useful when the page needs to point to itself.
- $ _ SERVER ['request _ URI '] # URI required to access this page.
- $ _ SERVER ['php _ AUTH_USER '] # When PHP runs in the Apache module mode and uses the HTTP authentication function, this variable is the user name entered by the user.
- $ _ SERVER ['php _ AUTH_PW '] # When PHP runs in the Apache module mode and is using the HTTP authentication function, this variable is the password entered by the user.
- $ _ SERVER ['auth _ type'] # When PHP runs in the Apache module mode and is using the HTTP authentication function, this variable is the authentication TYPE.
Note:
Differences between SERVER_NAME and HTTP_HOST (If port 80 is not used, HTTP_HOST = SERVER_NAME: SERVER_PORT
)
Common elements are also the bold parts above. using them, you can easily obtain the complete url.
Note:
$_SERVER
[
'REQUEST_URI'
] Only apache is used as the web server. if it does not exist, it should
$_SERVER
[
'PHP_SELF'
]) .
'?'
.
$_SERVER
[
'QUERY_STRING'
Urlencode can be used to prevent malicious URLs.
PS: it is much easier to get a url using javascript:
《script》document.write(this.location.href);《script》
