CI framework Source Code explanation: URI. php _ fetch_uri_string () function usage analysis, ciuristring_PHP tutorial

CI framework Source Code explanation: URI. php's _ fetch_uri_string () function usage analysis, ciuristring. Description of the CI framework source code: URI. php's _ fetch_uri_string () function usage analysis. ciuristring this article describes the CI framework URI. php's _ fetch_uri_string () function usage. I will share with you the usage analysis of the _ fetch_uri_string () function in URI. php for the CI framework source code, ciuristring

This article describes the use of the _ fetch_uri_string () function in the CI framework URI. php. We will share this with you for your reference. The details are as follows:

The url format in APPPATH/config. php.

$config['uri_protocol'] = 'AUTO';

This configuration item defines which server global variable you use to draw up a URL.
The default setting is auto, and round robin is performed in the following four methods. When your link cannot work, try to use an option other than auto.

'Auto' Default-AUTO detects
'Path _ info' Uses the PATH_INFO
'Query _ string' Uses the QUERY_STRING
'Request _ URI 'Uses the REQUEST_URI
'Orig _ PATH_INFO 'Uses the ORIG_PATH_INFO

Several member variables in CI_URI

$keyval = array(); //List  of cached uri segments$uri_string; //Current  uri string$segments //List  of uri segments$rsegments = array() //Re-indexed  list of uri segments

The obtained current uri string is assigned to $ uri_string through function _ set_uri_string ($ str ).

Several options are available for getting $ str, that is, the business flow section of _ fetch_uri_string ().

I. default

$config['uri_protocol'] = 'AUTO'

The program polls the following method at a time to obtain the URI

(1) when the program runs under CLI, that is, the PHP file under the command line. Ci will get the URI like this

private function _parse_cli_args(){  $args = array_slice($_SERVER['argv'], 1);  return $args ? '/' .implode('/',$args) : '';}

$ _ SERVER ['argv'] contains the parameters passed to the script. when the script runs in CLI, the c-format command line parameters are provided.

All parameters except the first in $ _ SERVER ['argv ']

If you perform this operation in the command line

php d:\wamp\www\CodeIgniter\index.php\start\index

_ Parse_cli_args () returns a/index. php/start/index string.

(2) the private function _ detect_uri () is called by default when REQUEST_URI is used to detect a url ()

(3) if neither of the preceding methods can obtain the uri, $ _ SERVER ['path _ info'] is used to obtain the uri.

$path = (isset($_SERVER['PATH_INFO'])) ? $_SERVER['PATH_INFO']  : @getenv('PATH_INFO');if (trim($path, '/')  != '' && $path != "/".SELF){  $this->_set_uri_string($path);  return;}

(4) if none of the above three methods can be obtained, use

$ _ SERVER ['query _ string'] or getenv ['query _ string']

$path = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : @getenv('QUERY_STRING');if (trim($path, '/') != ''){  $this->_set_uri_string($path);  return;}

(5) if no URI can be obtained from the above four methods, use the $ _ GET array.

if (is_array($_GET) && count($_GET) == 1 && trim(key($_GET), '/') != ''){  $this->_set_uri_string(key($_GET));  return;}

2. set in config. php:

$config['uri_protocol']

The program automatically performs the corresponding operation to obtain the uri.