如何在php上安装phalcon

怎么在php上安装phalcon
老是安装不成功 按官网上面提示去搞
先是放在ext文件夹下 再是在php.ini里面加extension=php_phalcon.dll然后重新启动wamp就提示这种错误...

然后我再去下载个php5.dll它又提示这种错误

------解决方案--------------------
我的 php 是 5.4.20 的
php_phalcon.dll 是5.4.12.0  的
没有问题的

print_r(preg_grep('/^phalcon/i', get_declared_classes()));

Array<br>(<br>    [145] => Phalcon\Exception<br>    [146] => Phalcon\Db\Adapter<br>    [147] => Phalcon\DI\Injectable<br>    [148] => Phalcon\DI<br>    [149] => Phalcon\Forms\Element<br>    [150] => Phalcon\Mvc\Model\Validator<br>    [151] => Phalcon\Validation\Validator<br>    [152] => Phalcon\Cache\Backend<br>    [153] => Phalcon\Db\Adapter\Pdo<br>    [154] => Phalcon\Db\Dialect<br>    [155] => Phalcon\Mvc\Model\MetaData<br>    [156] => Phalcon\Annotations\Adapter<br>    [157] => Phalcon\Logger\Formatter<br>    [158] => Phalcon\Logger\Adapter<br>    [159] => Phalcon\Flash<br>    [160] => Phalcon\Mvc\Model\Behavior<br>    [161] => Phalcon\Dispatcher<br>    [162] => Phalcon\Mvc\Model\Resultset<br>    [163] => Phalcon\Mvc\View\Engine<br>    [164] => Phalcon\Mvc\Model\Exception<br>    [165] => Phalcon\Assets\Resource<br>    [166] => Phalcon\Config<br>    [167] => Phalcon\Session\Adapter<br>    [168] => Phalcon\Acl\Adapter<br>    [169] => Phalcon\Translate\Adapter<br>    [170] => Phalcon\DI\FactoryDefault<br>    [171] => Phalcon\Mvc\Router<br>    [172] => Phalcon\Tag<br>    [173] => Phalcon\Acl<br>    [174] => Phalcon\Db<br>    [175] => Phalcon\Cache\Exception<br>    [176] => Phalcon\Cache\Multiple<br>    [177] => Phalcon\Cache\Backend\Apc<br>    [178] => Phalcon\Cache\Backend\File<br>    [179] => Phalcon\Cache\Backend\Mongo<br>    [180] => Phalcon\Cache\Backend\Memory<br>    [181] => Phalcon\Cache\Backend\Memcache<br>    [182] => Phalcon\Cache\Frontend\Output<br>    [183] => Phalcon\Cache\Frontend\None<br>    [184] => Phalcon\Cache\Frontend\Json<br>    [185] => Phalcon\Cache\Frontend\Base64<br>    [186] => Phalcon\Cache\Frontend\Data<br>    [187] => Phalcon\Tag\Select<br>    [188] => Phalcon\Tag\Exception<br>    [189] => Phalcon\Paginator\Exception<br>    [190] => Phalcon\Paginator\Adapter\Model<br>    [191] => Phalcon\Paginator\Adapter\QueryBuilder<br>    [192] => Phalcon\Paginator\Adapter\NativeArray<br>    [193] => Phalcon\Validation<br>    [194] => Phalcon\Validation\Message<br>    [195] => Phalcon\Validation\Exception<br>    [196] => Phalcon\Validation\Message\Group<br>    [197] => Phalcon\Validation\Validator\Email<br>    [198] => Phalcon\Validation\Validator\Regex<br>    [199] => Phalcon\Validation\Validator\Identical<br>    [200] => Phalcon\Validation\Validator\Between<br>    [201] => Phalcon\Validation\Validator\Confirmation<br>    [202] => Phalcon\Validation\Validator\PresenceOf<br>    [203] => Phalcon\Validation\Validator\ExclusionIn<br>    [204] => Phalcon\Validation\Validator\StringLength<br>    [205] => Phalcon\Validation\Validator\InclusionIn<br>    [206] => Phalcon\Db\Index<br>    [207] => Phalcon\Db\Column<br>    [208] => Phalcon\Db\Adapter\Pdo\Sqlite<br>    [209] => Phalcon\Db\Adapter\Pdo\Mysql<br>    [210] => Phalcon\Db\Adapter\Pdo\Oracle<br>    [211] => Phalcon\Db\Adapter\Pdo\Postgresql<br>    [212] => Phalcon\Db\Dialect\Oracle<br>    [213] => Phalcon\Db\Dialect\Mysql<br>    [214] => Phalcon\Db\Dialect\Sqlite<div class="clear">
                 
              
              
        
            </div>