安装php-solr扩展
下载安装：
libxml2 2.6.31或以上版本
libcurl 7.18.0 或以上版本
到php官网下载solr: http://pecl.php.net/package/solr
然后：
/usr/local/php5/bin/phpize ./configure --with-php-config=/usr/local/php5/bin/php-config sudo make sudo make test sudo make install
安装完后会有类似这样的提示：
Installing shared extensions: /usr/local/lib/php/extensions/no-debug-non-zts-20090626/
把这个记住，然后修改php.ini(vim /usr/local/etc/php.ini )，把
extension_dir = "./"
修改为
extension_dir = "/usr/local/php/lib/php/extensions/no-debug-non-zts-20090626/"
并添加一行
extension=solr.so
注意：/usr/local/php5/bin/phpize 可能会出现变化，具体根据php的安装位置而定。
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