The packages at http://windows.php.net/download/ all contain the php\_intl.dll which is located in the subdir ext/.
All you have to do is to check if your extension_dir points to the right directory and add (or uncomment) the extension=php\_intl.dll directive.
The problem was some DLLs like icudt36.dll were missing (noticed with sysinternals ProcMon), I've downloaded php 5.3.1 zip version and extract all DLL's to PHP folder. That solved the problem.
If you read error message, "icuuc36.dll" is missing.
The problem is that you don't have the PHP dir in your PATH, or you can copy all "intl" files from php directory to apache\bin directory.
They are :
icudt36.dll
icuin36.dll
icuio36.dll
icule36.dll
iculx36.dll
icutu36.dll
icuuc36.dll
For the php_intl.dll extension to work correctly, you need to have the following files in a folder in your PATH:
icudt36.dll
icuin36.dll
icuio36.dll
icule36.dll
iculx36.dll
icutu36.dll
icuuc36.dll
By default they're sitting in your PHP directory, but that directory isn't necessarily in your PATH (it wasn't for me, using xampp)
This has to be in your global path, not just your user's path. To set the global path, go to system info (windows key + PAUSE), then Advanced System Settings (Vista+) or Advanced (XP) and click the "Environment Variables" button and add the appropriate directory to the PATH variable in the System Variables list.
Had the same issue ... I found the files needed by searching my drive for icu**.dll and found the ones listed above but with 46 instead of 36 in the php folder. I copy pasted them to the apache/bin file and tried starting apache and it finally started. On the Server Checks page it has now changed from Yellow Check to Green OK. Hope this helps.
I have IIS 7 and installed PHP using Microsoft Web Platform Installer on Windows 7. In IIS, go to PHP Manager in settings main page -> PHP Extensions -> Enable or Disable an Extension.
Intl extension is disabled by default.
In default I've had php_intlenabled (you can enable it when you left click on the wamp icon in the system tray > PHP > PHP extensions and check if is it marked)
To have it properly working, I've had to copy:
C:\wamp\bin\php\php5.5.12\icu**51.dll
(total 8 files)
to
C:\wamp\bin\apache\apache2.4.9\bin
Then just restart the wamp and everything was just fine.
Now you can directly load those necessary dll files (ie libeay32, libssh2, ssleay32, icu**.dll ) from your httpd.conf (apache configuratio file) file. You don't have to do any other things like copying them to the apache's bin directory or php's ext directory. Just add them directly in you apache's httpd.conf file.
Please note that the followng example is for php version 5.5.x.
Under php extensions in your wampserver, ensure intl is checked
check your extension_dir in your php/v7.0/php file ensure the directory is not commented and it is accurate
(Dont know if this contributed but i did all three)In your extension list in the same file as 2 above, include the intl file in the same format as the rest(if it is not included).
All the best
I was having trouble getting intl to run using PHP 7.1.7 and PhpStorm on Windows 10. Based on other answers here I could tell it was a PATH/DLL dependency problem but I couldn't seem to find all of the required files even after (re-)installing the Visual C++ Redistributable.
I eventually went searching my C: drive for vcr*.dll and found a copy of vcruntime140.dll in my C:\Program Files\Mozilla Firefox directory. So, in addition to making these changes to php.ini:
extension_dir = "ext"
extension=php_intl.dll
I also set my runtime PATH to ONLY the PHP directory (in my case, C:\Program Files\PHP\7.1.7) and the Firefox directory (above) and it FINALLY worked! I know it needs more than just the vcruntime140.dll but the other required DLLs must be in the FF directory too (there are a few dozen but I didn't bother to figure out which ones are essential).
In my case adding PHP directory to PATH in user environment didn't work. After some testing I've found that it should be added to system PATH (I don't know what's the name of this part of system setting windows, 'couse I have Polish Windows).