I installed WAMP on my local machine. My PHP version is 5.3.3 in phpinfo() but that extension doesn't exist! :(
How can I install this extension without compiling it? Here is just source of it.
The extension was there! All you need to do is clearing the comment(;) before this line in php.ini file:
;extension=php_intl.dll
to
extension=php_intl.dll
if you see this on Debian / other Linux platforms.
sudo apt-get install php5-intl - for PHP 5.6
sudo apt-get install php7.0-intl - PHP 7+
After that restart Apache services.
sudo service apache2 restart restart apache to get the changes.
Archana
It may be because of Apache. Restart Apache by following command
service httpd restart
and try again.
来源：https://stackoverflow.com/questions/6242378/fatal-error-class-intldateformatter-not-found