wget http://downloads.mongodb.org/linux/mongodb-linux-i686-2.2.2.tgz
mv mongodb-linux-i686-2.2.2.tgz  mongodb.2.2.2.tgz
tar -zxvf mongodb.2.2.2.tgz
mv mongodb-linux-i686-2.2.2/ /usr/local/mongodb/
cd /usr/local/mongodb/

2.4.9版本：
http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-2.4.9.tgz

cd /usr/local/mongodb/bin 
/usr/local/mongodb/bin/mongod --port=12345 --dbpath=/usr/local/mongodb/mongodb_data --logpath=/home/wwwlog/mongodb.log --logappend&

yum install php-pear
cd /usr/local/php/bin
sudo ./pecl install mongo

Build process completed successfully
Installing '/usr/lib/php/modules/mongo.so'
install ok: channel://pecl.php.net/mongo-1.3.4
configuration option "php_ini" is not set to php.ini location
You should add "extension=mongo.so" to php.ini

<?php
 error_reporting(E_ALL);
 ini_set('display_errors', '1');
 
 header("Content-type: text/plain");
 
 $connection = new Mongo(127.0.0.1:12345);
 $db = $connection->mydb;
 
 $collection = $db->mycollection;
 $myobj = array("first_name" => "John", "last_name" => "Doe", "age" => 30);
 $myobj2 = array("first_name" => "Jane", "last_name" => "Doe", "age" => 27);
 $collection->insert($myobj);
 $collection->insert($myobj2);
 
 $cursor = $collection->find();
 foreach($cursor as $result)
 {
 echo "Name: " . $result["last_name"] . ", " . $result["first_name"] . "\n";
 echo "Age: " . $result["age"] . "\n\n";
 }
 
 $db->drop();
 $connection->close();
?>

-bash: /usr/local/bin/mongo: /lib/ld-linux.so.2: bad ELF interpreter: 没有那个文件或目录

yum install ld-linux.so.2

mongo: error while loading shared libraries: libstdc++.so.6: cannot open shared object file: No such file or directory

yum whatprovides libstdc++.so.6
yun install llibstdc++.so.6