PHP unable to load dynamic library (mongo.so)

Question

i'm trying to use rockmongo. After installation, i'm unable to use it. It says "To make things right, you must install php_mongo module. Here for installation documents on PHP.net."

i have already installed mongoDB driver extension via sudo pecl install mongo.

locate mongo shows /usr/lib/php5/20090626+lfs/mongo.so

However, php -v shows few warnings (which i think is related to mongo)

PHP:  syntax error, unexpected $end, expecting ']' in /etc/php5/cli/conf.d/mongodb.ini on line 3
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20100525+lfs/mongo.so' - /usr/lib/php5/20100525+lfs/mongo.so: cannot open shared object file: No such file or directory in Unknown on line 0
PHP 5.4.28-1+deb.sury.org~precise+1 (cli) (built: May  5 2014 09:39:26) 
Copyright (c) 1997-2014 The PHP Group
Zend Engine v2.4.0, Copyright (c) 1998-2014 Zend Technologies

i opened /usr/lib/php5/ and found out that there are another directory(20090626+lfs) which contains mongo.so.

i tried various online tutorial, but nothing helped.

Edit: Here's my mongodb.ini

;----- start -----
extension=mongo.so
\[mongo\]
; If the driver should reconnect to mongo
mongo.auto_reconnect = true
; Whether to allow persistent connections
mongo.allow_persistent = On
; Maximum number of persistent connections (-1 means unlimited)
mongo.max_persistent = -1
; Maximum number of links (persistent and non-persistent, -1 means unlimited)
mongo.max_connections = -1
; Default host for mongo connection
mongo.default_host = www.example.com
; Default port for mongo database
mongo.default_port = 42
; When saving files to the database, size of chunks to split them into
mongo.chunk_size = 1024
; Specify an alternate character to $ to use for special db functions ($set, $push, $exists, etc.)

mongo.cmd = "$"
;----- end -----

Answer 1

I solved this problem using the 1.1.9 version of mongodb driver for php 5. First uninstall the current version of mongodb and then install the 1.1.9 version:

sudo pecl uninstall mongodb
sudo pecl install mongodb-1.1.9
composer update

Answer 2

My php version is 7.0, but it should work version 5.x too.

If you have this in the file /etc/php/7.0/mods-available/mongo.ini

extension=mongodb.so

Comment that line. After that restart php and it should work.

Answer 3

For me this works well

sudo apt-get install php7.2-mongodb

Change the '7.2' for your php version