[root@localhost ~]# yum install php-pecl-mongo mongodb mongodb-devel mongodb-server 

[root@localhost www]# cat /etc/mongodb.conf |awk '{if($0 !~ /^$/ && $0 !~ /^#/) {print $0}}' 
logpath=/var/log/mongodb/mongodb.log //日志位置 
fork = true        //后台运行 
logappend=true       //追加日志 
port = 27017       //端口 
dbpath=/var/lib/mongodb     //数据库路径 
pidfilepath=/var/run/mongodb/mongodb.pid //pid路径 

[root@localhost lib]# mkdir -p /var/lib/mongodb 
[root@localhost lib]# chown mongodb:mongodb -R /var/lib/mongodb/ 

[root@localhost www]# /etc/init.d/mongod start //启动 
 
//查看 
[root@localhost www]# netstat -tpnl|grep 27017 
tcp  0  0 0.0.0.0:27017    0.0.0.0:*     LISTEN  4641/mongod 

<?php 
$mongo = new Mongo(); 
$dbs = $mongo->listDBs(); 
print_r($dbs); 
/** 结果： 
Array 
( 
 [databases] => Array 
  ( 
   [0] => Array 
    ( 
     [name] => admin 
     [sizeOnDisk] => 1 
     [empty] => 1 
    ) 
 
   [1] => Array 
    ( 
     [name] => local 
     [sizeOnDisk] => 1 
     [empty] => 1 
    ) 
 
  ) 
 
 [totalSize] => 0 
 [ok] => 1 
) 
*/