json사용을 위한 PECL extensions설치

php같은 경우 module을 여러 관리 프로그램으로 install하네..희안하네~

# pecl install json
WARNING: channel "pear.php.net" has updated its protocols, use "channel-update pear.php.net" to update
downloading json-1.2.1.tgz ...
Starting to download json-1.2.1.tgz (17,780 bytes)
......done: 17,780 bytes
11 source files, building
running: phpize
Configuring for:
PHP Api Version:         20041225
Zend Module Api No:      20050922
Zend Extension Api No:   220051025