php - How do I access a variable inside of preg_replace_callback? -

-

i'm trying replace {{key}} items in $text values passed array. when tried adding print_r see going on got undefined variable: kvpairs error. how can access variable form within preg_replace_callback?

public function replacevalues($kvpairs, $text) {     $text = preg_replace_callback(         '/(\{{)(.*?)(\}})/',         function ($match) {             $attr = trim($match[2]);             print_r($kvpairs[strtolower($attr)]);             if (isset($kvpairs[strtolower($attr)])) {                 return "<span class='attr'>" . $kvpairs[strtolower($attr)] . "</span>";             } else {                 return "<span class='attrunknown'>" . $attr . "</span>";             }         },         $text     );     return $text; }

update:

i've tried global scope thing, doesn't work either. i've added 2 print statements see whats doing on, 1 inside , 1 outside preg_replace_callback.

public function replacevalues($kvpairs, $text) {     $attrtest = 'date';     print_r("--" . strtolower($attrtest) . "--" . $kvpairs[strtolower($attrtest)] . "--\n");     $text = preg_replace_callback(         '/(\{{)(.*?)(\}})/',         function ($match) {             global $kvpairs;             $attr = trim($match[2]);             print_r("==" . strtolower($attr) . "==" . $kvpairs[strtolower($attr)] . "==\n");             if (isset($kvpairs[strtolower($attr)])) {                 return "<span class='attr'>" . $kvpairs[strtolower($attr)] . "</span>";             } else {                 return "<span class='attrunknown'>" . $attr . "</span>";             }         },         $text     );     return $text; }

the output is:

--date--1977-05-20-- ==date====

as callback function closure, can pass arguments via use

function ($match) use ($kvpairs) {     ... }

better polluting global space


Comments

Post a Comment

Popular posts from this blog

java - Jmockit String final length method mocking Issue -

-
using jmockit 1.2 jar, trying mock string's length method getting unexpected invocation exception: failed: test java.lang.illegalstateexception: missing invocation mocked type @ point; please make sure such invocations appear after declaration of suitable mock field or parameter @ stringdemo.testa$1.<init>(testa.java:17) @ stringdemo.testa.test(testa.java:13) i using testng: @test public void test() throws exception { new expectations() { @mocked("length") string astring; { astring.length(); result = 2; } }; system.out.println(a.showa("test")); } } actual class a: public class { public static int showa(string str){ int a= str.length(); return a; } } this wrong way of recording expected results. shouldn't mock , record string's length() method, record showa() instead. here solution @suppresswarnings("unused...
Read more

asp.net - Razor Page Hosted on IIS 6 Fails Every Morning -

-
i have simple page in intranet uses razor/asp fetch single record table , display it, plus few graphic, dashboard display. meaning, no user intervention other first time open ie internal url. the problem having every morning ie displays "page not found or network error" message. refresh page, , it's stuck , doesn't display anything. try different pc, open ie internal url , it's stuck... ...until following: login server hosting page run inetmgr go web sites, etc right click on page that's giving me problem , select browse at moment, error message: server error in '/' application. -------------------------------------------------------------------------------- type of page not served. description: type of page have requested not served because has been explicitly forbidden. extension '.cshtml' may incorrect. please review url below , make sure spelled correctly. requested url: /application/dashboard.cshtml ---------------...
Read more

ios - Can NSManagedObject conform to NSCoding -

-
i need transfer single object across device. right converting nsmanagedobject dictionary , archiving , sending nsdata. upon receiving unarchiving it. transfer nsmanagedobject archiving , unarchiving instead of creating intermediate data object. @interface test : nsmanagedobject<nscoding> @property (nonatomic, retain) nsstring * title; @end @implementation test @dynamic title; - (id)initwithcoder:(nscoder *)coder { self = [super init]; if (self) { self.title = [coder decodeobjectforkey:@"title"]; //<crash } return self; } - (void)encodewithcoder:(nscoder *)coder { [coder encodeobject:self.title forkey:@"title"]; } @end nsdata *archivedobjects = [nskeyedarchiver archiveddatawithrootobject:testobj]; nsdata *objectsdata = archivedobjects; if ([objectsdata length] > 0) { nsarray *objects = [nskeyedunarchiver unarchiveobjectwithdata:objectsdata]; } the problem above code is. crashes @ self.title in initwithcoder sa...
Read more