Is the regular expression-ThinkPHP incorrect? /{| (W + )}/

Using ThinkPHP3.2.2, I read a line of code like this in a file: {code...} 1) Is this section {| (w +)} wrong? Curly braces {}, separator | isn't it regular? But it runs normally. $ Rule value example: {code...} 2) he intended to read a line of code like this in a file using ThinkPHP3.2.2:

# File ThinkPHP/Library/Behavior/ReadHtmlCacheBehavior. class. php # method # {| FUN} use functions $ rule = preg_replace_callback ('/{| (\ w +)}/', function ($ match) {return $ match [1] () ;}, $ rule );

1) Is this/{| (\ w +)}/incorrect?
Curly braces {}, separator | isn't it regular? But it runs normally.

$ Rule value example:

$rule = '{:module}/{:controller}/{:action}/{$_SERVER.REQUEST_URI|md5}';

2) The intention is to perform MD5 for $ _ SERVER. REQUEST_URI and then return it.
But in that piece of code, does it pass in the value?

return $match[1]();

Complete File Code

// Determine whether static cache is required. static private function requireHtmlCache () {// analyze the current static rule $ htmls = C ('html _ CACHE_RULES '); // read the static Rule if (! Empty ($ htmls) {$ htmls = array_change_key_case ($ htmls); // static rule file Definition Format actionName => array ('static rule', 'cache time ', 'additional rule') // 'read' => array ('{id}, {name}', 60, 'md5 ') the uniqueness and enforceability of the static rule must be ensured. // The static rule $ controllerName = strtolower (CONTROLLER_NAME); $ actionName = strtolower (ACTION_NAME); if (isset ($ htmls [$ controllerName. ':'. $ actionName]) {$ html = $ htmls [$ controllerName. ':'. $ actionName]; // static rule for operations on a controller} elseif (isset ($ Htmls [$ controllerName. ':']) {// static rule of a controller $ html = $ htmls [$ controllerName. ':'];} elseif (isset ($ htmls [$ actionName]) {$ html = $ htmls [$ actionName]; // static rules for all operations} elseif (isset ($ htmls ['*']) {$ html = $ htmls ['*']; // Global static rule} if (! Empty ($ html) {// interpret static rules $ rule = is_array ($ html )? $ Html [0]: $ html; // system variable starting with $ _ $ callback = function ($ match) {switch ($ match [1]) {case '_ get': $ var =$ _ GET [$ match [2]; break; case' _ Post ': $ var = $ _ POST [$ match [2]; break; case '_ request': $ var = $ _ REQUEST [$ match [2]; break; case '_ Server': $ var = $ _ SERVER [$ match [2]; break; case' _ SESSION ': $ var = $ _ SESSION [$ match [2]; break; case '_ cookies': $ var = $ _ COOKIE [$ match [2]; break ;} return (count ($ match) = 4 )? $ Match [3] ($ var): $ var ;}; $ rule = preg_replace_callback ('/{\$ (_ \ w +) \. (\ w + )(? :\| (\ W + ))?} /', $ Callback, $ rule); // {ID | FUN} $ rule = preg_replace_callback ('/{(\ w +) \ | (\ w +)}/', function ($ match) {return $ match [2] ($ _ GET [$ match [1]);}, $ rule); $ rule = preg_replace_callback ('/{(\ w +)}/', function ($ match) {return $ _ GET [$ match [1] ;}, $ rule); // special system variable $ rule = str_ireplace (array ('{: controller }', '{: action}', '{: module}'), array (CONTROLLER_NAME, ACTION_NAME, MODULE_NAME), $ rule); // {| FUN} Use the functions $ rule = preg_replace_callback ('/{| (\ w +)}/', function ($ match) {return $ match [1] ();}, $ rule); $ cacheTime = C ('html _ CACHE_TIME ', null, 60); if (is_array ($ HTML) {if (! Empty ($ html [2]) $ rule = $ html [2] ($ rule); // apply the additional function $ cacheTime = isset ($ html [1])? $ Html [1]: $ cacheTime; // cache validity period} else {$ cacheTime = $ cacheTime;} // The current cache file define ('html _ FILE_NAME ', HTML_PATH. export rule.c('html_file_suffix', null,'.html '); return $ cacheTime ;}// return false without caching ;}

Reply content:

Using ThinkPHP3.2.2, read the following code in a file:

# File ThinkPHP/Library/Behavior/ReadHtmlCacheBehavior. class. php # method # {| FUN} use functions $ rule = preg_replace_callback ('/{| (\ w +)}/', function ($ match) {return $ match [1] () ;}, $ rule );

1) Is this/{| (\ w +)}/incorrect?
Curly braces {}, separator | isn't it regular? But it runs normally.

$ Rule value example:

$rule = '{:module}/{:controller}/{:action}/{$_SERVER.REQUEST_URI|md5}';

2) The intention is to perform MD5 for $ _ SERVER. REQUEST_URI and then return it.
But in that piece of code, does it pass in the value?

return $match[1]();

Complete File Code

// Determine whether static cache is required. static private function requireHtmlCache () {// analyze the current static rule $ htmls = C ('html _ CACHE_RULES '); // read the static Rule if (! Empty ($ htmls) {$ htmls = array_change_key_case ($ htmls); // static rule file Definition Format actionName => array ('static rule', 'cache time ', 'additional rule') // 'read' => array ('{id}, {name}', 60, 'md5 ') the uniqueness and enforceability of the static rule must be ensured. // The static rule $ controllerName = strtolower (CONTROLLER_NAME); $ actionName = strtolower (ACTION_NAME); if (isset ($ htmls [$ controllerName. ':'. $ actionName]) {$ html = $ htmls [$ controllerName. ':'. $ actionName]; // static rule for operations on a controller} elseif (isset ($ Htmls [$ controllerName. ':']) {// static rule of a controller $ html = $ htmls [$ controllerName. ':'];} elseif (isset ($ htmls [$ actionName]) {$ html = $ htmls [$ actionName]; // static rules for all operations} elseif (isset ($ htmls ['*']) {$ html = $ htmls ['*']; // Global static rule} if (! Empty ($ html) {// interpret static rules $ rule = is_array ($ html )? $ Html [0]: $ html; // system variable starting with $ _ $ callback = function ($ match) {switch ($ match [1]) {case '_ get': $ var =$ _ GET [$ match [2]; break; case' _ Post ': $ var = $ _ POST [$ match [2]; break; case '_ request': $ var = $ _ REQUEST [$ match [2]; break; case '_ Server': $ var = $ _ SERVER [$ match [2]; break; case' _ SESSION ': $ var = $ _ SESSION [$ match [2]; break; case '_ cookies': $ var = $ _ COOKIE [$ match [2]; break ;} return (count ($ match) = 4 )? $ Match [3] ($ var): $ var ;}; $ rule = preg_replace_callback ('/{\$ (_ \ w +) \. (\ w + )(? :\| (\ W + ))?} /', $ Callback, $ rule); // {ID | FUN} $ rule = preg_replace_callback ('/{(\ w +) \ | (\ w +)}/', function ($ match) {return $ match [2] ($ _ GET [$ match [1]);}, $ rule); $ rule = preg_replace_callback ('/{(\ w +)}/', function ($ match) {return $ _ GET [$ match [1] ;}, $ rule); // special system variable $ rule = str_ireplace (array ('{: controller }', '{: action}', '{: module}'), array (CONTROLLER_NAME, ACTION_NAME, MODULE_NAME), $ rule); // {| FUN} Use the functions $ rule = preg_replace_callback ('/{| (\ w +)}/', function ($ match) {return $ match [1] ();}, $ rule); $ cacheTime = C ('html _ CACHE_TIME ', null, 60); if (is_array ($ HTML) {if (! Empty ($ html [2]) $ rule = $ html [2] ($ rule); // apply the additional function $ cacheTime = isset ($ html [1])? $ Html [1]: $ cacheTime; // cache validity period} else {$ cacheTime = $ cacheTime;} // The current cache file define ('html _ FILE_NAME ', HTML_PATH. export rule.c('html_file_suffix', null,'.html '); return $ cacheTime ;}// return false without caching ;}