Mac osx下PHP Warning: PHP Startup: Unable to lo...

今天在Mac上使用Yii框架生成項目的時候，打印出一行warning，以下：

PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/extensions/no-debug-non-zts-20090626/php_mysql.dll' - dlopen(/usr/lib/php/extensions/no-debug-non-zts-20090626/php_mysql.dll, 9): image not found in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/extensions/no-debug-non-zts-20090626/php_mysqli.dll' - dlopen(/usr/lib/php/extensions/no-debug-non-zts-20090626/php_mysqli.dll, 9): image not found in Unknown on line 0

百思不得其解，幾經周折，在這找到了答案：http://superuser.com/questions/89176/php-warning-php-startup-unable-to-load-dynamic-library-php-mysql-dll-mac-10-6

記之。。。