title: phpinfo() different from php-i for pdo_mysql
body: <p>I have a serious problem when installing my php extension pdo_mysql.</p>
  
  <p>my phpinfo() shows that mysql is not enabled, but when i do php-i, or php-m , mysql is enabled.
  I've checked my php.ini, and I've made the correct changes in the correct loaded php.ini:
  my extension_dir, and extension= are correct too.</p>
  
  <p>My OS : mac os x 10.5</p>
  
  <p>I cannot understand why mysql isn't enabled in my phpinfo()!!
  Please help me on this one, i've been stuck for days!</p>