Php obtains the php server variable in the current url path.
Programming in php to obtain the current url address and server variables mainly uses the following global variables: $ _ server ["query_string"], $ _ server ["request_uri"], $ _
The variables included in PHP $ _ SERVER are global variables, which can be called Super global variables. Below I will give you a detailed explanation of common PHP $ _ SERVER usage, hoping to help you.
Frequently used $ _ SERVER [] Variables
$ _
#一, PHP variable definition: Variables are used to store values, such as numbers, text strings or arrays, V: string/integer/double/array/object
Naming rules:
1. The variable name of PHP is case-sensitive. 2. The variable name must begin with $3,
Php pre-defined variable help (with instance ). From php4.1.0, the preferred method for getting external variables is to use the Superglobal variables mentioned below. Prior to this, people were either dependent on register_globals, or long
The preferred method for php to obtain external variables is to use the hyperglobal variables mentioned below. Prior to this, people were either dependent on register_globals or long pre-defined PHP array ($ HTTP _ * _ VARS ). From PHP5.0.0, PHP
The preferred method for php to obtain external variables is to use the hyperglobal variables mentioned below. Prior to this, people were either dependent on register_globals or long pre-defined PHP array ($ HTTP _ * _ VARS ). Starting from PHP5.0.0
Php server variable $ _ SERVER introduction. SERVER variable $ _ SERVER Summary: $ _ SESSION [PHP_SELF] -- get the file name of the currently executing script. $ _ SERVER [SERVER_PROTOCOL] -- Name of the communication protocol and SERVER variable on
PHP obtains the path, name, and server path of the file running before the current period. & lt ;? Phpecho displays the relative path and file name of the script file :. $ _ SERVER [PHP_SELF]. & lt; br & gt; echo display the CGI script
PHP beginners learn variables and constants. In a change process, the constant volume is called a constant, while the variable is a sequential storage space with a name. The following describes the constant amount of the base of PHP variables and
: This article mainly introduces php programming notes. if you are interested in PHP tutorials, please refer to them. Three methods for php to obtain POST data
Php image watermarking source code
Php + ajax + json is the simplest example.
Php Chinese
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