About the requested PHP extension Ext-pdo_sqlite * is missing from your system. Install or Enable PHP ' s pdo_sqlite extension to resolve

 $ php composer.phar install  loading composer Repositories with package informationinstalling dependencies (including require -dev) from lock file  warning:the lock  file  is date  with the latest changes in
     Composer.json. Getting outdated dependencies. Run update to update them.  Your requirements could not being resolved to an installable set of packages. Problem  1 -The requested PHP extension ext-pdo_sqlite * is missing from your system. Install or Enable PHP   " s pdo_sqlite extension.  

Today on GitHub Download a symfony demo, solve the error, various search, eventually found the php.ini this file (file in your PHP installation directory: my C:\php5\ Php-5.5.30-nts-win32-vc11-x64,)

Open the file to find the following code: (The solution is I wrote the semicolon!!!!!!!!!! )

.....
; extension=Php_oci8_11g.dll  ; Use with Oracle 11gR2 Instant clientextension=php_openssl.dll;extension=php_pdo_ Firebird.dllextension=php_pdo_mysql.dll;extension=php_pdo_oci.dll;extension=php_pdo _odbc.dllextension=Ext\php_pdo_pgsql.dll (2: By the way I put here ";" The semicolon is removed)extension=Php_pdo_sqlite.dll (1: I put here ";" The semicolon is removed); extension=php_pgsql.dll;extension=php_pspell.dll;extension=php_shmop.dll

......

Then save on OK, you can find the ETX directory, where the face is all about the database script;

I now feel the use of which, I will remove the front of the semicolon, but do not know if this is the case, at least not the wrong!

Refer to Stack overflow and Baidu experience

About the requested PHP extension Ext-pdo_sqlite * is missing from your system. Install or Enable PHP ' s pdo_sqlite extension to resolve