Error In PHP5 ..Unable to load dynamic library

Asked 12/5, 2012 at 16:35 Answered 24/8, 2019 at 11:55

root@ip-10-131-9-200:/etc/php5/apache2# php -a
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20090626+lfs/curl.so' - /usr/lib/php5/20090626+lfs/curl.so: cannot open shared object file: No such file or directory in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20090626+lfs/mcrypt.so' - /usr/lib/php5/20090626+lfs/mcrypt.so: cannot open shared object file: No such file or directory in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20090626+lfs/mysql.so' - /usr/lib/php5/20090626+lfs/mysql.so: cannot open shared object file: No such file or directory in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20090626+lfs/mysqli.so' - /usr/lib/php5/20090626+lfs/mysqli.so: cannot open shared object file: No such file or directory in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20090626+lfs/pdo.so' - /usr/lib/php5/20090626+lfs/pdo.so: cannot open shared object file: No such file or directory in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20090626+lfs/pdo_mysql.so' - /usr/lib/php5/20090626+lfs/pdo_mysql.so: cannot open shared object file: No such file or directory in Unknown on line 0
Interactive shell

Exemplification answered 12/5, 2012 at 16:35 Comment(0)

142

Even though several other answers suggest it, installing more unnecessary software is generally not the best solution. Instead, you should fix the underlying problem. The reason these messages appear is because you are trying to load those extensions, but they are not installed. So the easy solution is simply to tell PHP to stop trying to load them:

First, find out which files are trying to load the above extensions:

$ grep -Hrv ";" /etc/php5 | grep -E "extension(\s+)?="

Example output for Ubuntu:

/etc/php5/mods-available/gd.ini:extension=gd.so
/etc/php5/mods-available/pdo_sqlite.ini:extension=pdo_sqlite.so
/etc/php5/mods-available/pdo.ini:extension=pdo.so
/etc/php5/mods-available/pdo_mysql.ini:extension=pdo_mysql.so
/etc/php5/mods-available/mysqli.ini:extension=mysqli.so
/etc/php5/mods-available/mysql.ini:extension=mysql.so
/etc/php5/mods-available/curl.ini:extension=curl.so
/etc/php5/mods-available/sqlite3.ini:extension=sqlite3.so
/etc/php5/conf.d/mcrypt.ini:extension=mcrypt.so
/etc/php5/conf.d/imagick.ini:extension=imagick.so
/etc/php5/apache2/php.ini:extension=http.so

Now just find the files that are loading the extensions that are causing the errors and comment out those lines with a ;. For some reason this happened to me with the default install of Ubuntu, so hopefully this helps someone else.

Justicz answered 9/6, 2013 at 3:39 Comment(10)

I encountered the same errors after a dist-upgrade from Debian 6.x to 7.1. I didn't know suhosin and idn modules got removed in this newer packages.. so big thx for the nice grep line. – Savour 24/7, 2013 at 10:15

Thank you very much. This worked pretty fine in Ubuntu 12.04.2 LTS. I yet have a question: If I disable the extensions causing the error by placing a ; symbol at the beggining of the line, will they be re-enabled after an upgrade? – Madame 12/8, 2013 at 16:21

@GeppettvsD'Constanzo When upgrading, sometimes it will prompt you whether to overwrite the config file. If you overwrite it, it MAY overwrite these ones, but I'm not too sure. Just choose no. – Justicz 12/8, 2013 at 19:52

I agree, if you don't need it the extension why install it? – Thermotherapy 18/9, 2013 at 20:28

In my case (Ubuntu 12.04, update PHP 5.3.x -> 5.4.x) I had to remove the conf file associated to the extension in /etc/php5/cli/conf.d/ – Willianwillie 11/6, 2014 at 7:54

I like this kind of answers because they make you understand what's going on AKA = know-how – Paraguay 10/7, 2014 at 8:46

i like this answer too BUT, re: "but they are not installed" comment by Mike isn't always 100% true. My php.ini file had a common config: extension_dir = "./usr/lib64/php/modules", but when i tried to run php at the prompt (ex: #php my_file.php) it would trigger this error because it points to a RELATIVE path. By changing the setting to extension_dir = "/usr/lib64/php/modules" (without the preceding dot) i no longer received this error, because the modules were indeed installed, and could now be found when running php from anywhere on my server. – Phonology 2/11, 2015 at 17:35

This regex is not applicable on all case, for exemple in Newrelic .ini file they are spaces around equal sign: /etc/php5/mods-available/newrelic.ini:extension = "newrelic.so" – Supraorbital 22/6, 2016 at 21:50

is controversial, altough this answer helped a lot of people should also explain how to fix it when really we need the extension, that's my case. I need that extensión loaded and this doesn't help me :S – Zipper 30/1, 2017 at 13:48

On ubuntu 16.04 I had to go to /etc/php/7.0/cli/php.ini to comment out those lines. – Yount 6/6, 2017 at 14:31

sudo apt-get install php5-mcrypt
sudo apt-get install php5-mysql

...etc resolved it for me :)

hope it helps

Hertel answered 1/8, 2012 at 19:32 Comment(1)

Your answer got my site working again! thank you so much, I really appreciate this. I have spend hours on this. I followed some instructions to upgrade mysql and they must have omitted this part. – Gorgias 18/11, 2013 at 9:2

Look /etc/php5/cli/conf.d/ and delete corresponding *.ini files. This error happens when you remove some php packages not so cleanly.

Aspectual answered 13/5, 2013 at 14:21 Comment(0)

Seems like you upgraded PHP to newer version and old .ini files are still pointing to old location.

The solution: find out where are modules located now

ls -l /usr/lib/php5

There should be a directory similar to old 20090626. In my case it is now 20131226

The .ini files giving you an error are located at /etc/php5/cli/conf.d/

Just edit those .ini files which module gives you an error. For example, in case the error is for mcrypt module:

sudo vi /etc/php5/cli/conf.d/20-mcrypt.ini

Change the line:

extension=/usr/lib/php5/20090626/mcrypt.so

to reflect the new path for .so file. In my case the correct path should be:

extension=/usr/lib/php5/20131226/mcrypt.so

That's it! The error is gone. Ofc you'd have to do it with each module giving you an error.

Artistic answered 28/1, 2016 at 21:23 Comment(0)

If you put the ; symbol, this action inactive the extension.

I had the same problem and did the following:

Uninstall php with purge parameter:

sudo apt-get --purge remove php5-common

And install again:
```
sudo apt-get install php5 php5-mysql
```

Brat answered 2/2, 2014 at 13:17 Comment(0)

My problem was solved by the following command

sudo apt-get install php5-mcrypt

I have

PHP 5.3.10-1ubuntu3.4 with Suhosin-Patch (cli)
Ubuntu Desktop 12.04
Mysql 5.5

Mannie answered 14/12, 2012 at 3:53 Comment(0)

I found this solution by blog.tordeu.com, and it's

sudo aptitude purge php5-suhosin

I'm not sure, but it seems that the suhosin is no longer needed, it worked for my, my PHP version:

PHP 5.4.34-1+deb.sury.org~lucid+1 (cli) (built: Oct 17 2014 15:26:51)
Copyright (c) 1997-2014 The PHP Group
Zend Engine v2.4.0, Copyright (c) 1998-2014 Zend Technologies

Secateurs answered 13/11, 2014 at 6:7 Comment(0)

If you are using 5.6 php,

sudo apt-get install php5.6-curl

Torbert answered 9/1, 2017 at 17:44 Comment(1)

i installed for 7.* php with command: sudo apt-get install php-curl – Gary 23/10, 2017 at 9:44

Somehow the gmp.so file seems to have been deleted from my system. This is what fixed it for me:

sudo apt-get install --reinstall php5-gmp

Senility answered 12/7, 2013 at 14:59 Comment(0)

Well for Ubuntu 14.04 I was getting that error just for mcrypt:

PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20121212/mcrypt.ini' - /usr/lib/php5/20121212/mcrypt.ini: cannot open shared object file: No such file or directory in Unknown on line 0

If you have a closer look at the error, php is looking for mcrypt.ini and not for mcrypt.so at that location. I just copy mcrypt.so to mcrypt.ini and that's it, the warning is gone and the extension now is properly installed. It might look a bit dirty but it worked!

Keen answered 24/1, 2015 at 16:31 Comment(0)

I had enabled the extension_dir in php.ini by uncommenting,

  extension_dir = "ext"
  extension=phpchartdir550.dll

and copying phpchartdir550 dll to the extension_dir (/usr/lib/php5/20121212), resulted in the same error.

  PHP Warning:  PHP Startup: Unable to load dynamic library 'ext/phpchartdir550.dll' - ext/phpchartdir550.dll: cannot open shared object file: No such file or directory in Unknown on line 0
  PHP Warning:  PHP Startup: Unable to load dynamic library 'ext/pdo.so' - ext/pdo.so: cannot open shared object file: No such file or directory in Unknown on line 0
  PHP Warning:  PHP Startup: Unable to load dynamic library 'ext/gd.so' - ext/gd.so: cannot open shared object file: No such file or directory in Unknown on line 0

As @Mike pointed out, it is not necessary to install all the stuff when they are not actually required in the application.

The easier way is to provide the full path to the extensions to be loaded after copying the libraries to the correct location.

Copy phpchartdir550.dll to /usr/lib/php5/20121212, which is the extension_dir in my Ubuntu 14.04 (this can be seen using phpinfo()) and then provide full path to the library in php.ini,

;   extension=/path/to/extension/msql.so
extension=/usr/lib/php5/20121212/phpchartdir550.dll

restart apache: sudo service apache2 restart

even though other .so's are present in the same directory, only the required ones can be selectively loaded.

Misogamy answered 16/3, 2016 at 7:58 Comment(0)

I had a similar problem, which led me here:

$ phpunit --version
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20131226/profiler.so' - /usr/lib/php5/20131226/profiler.so: cannot open shared object file: No such file or directory in Unknown on line 0
PHPUnit 5.7.17 by Sebastian Bergmann and contributors.

Unlike the above, installing the software did not resolve my problem because I already had it.

$ sudo apt-get install php5-uprofiler
Reading package lists... Done
Building dependency tree       
Reading state information... Done
php5-uprofiler is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 52 not upgraded.

I found my solution via : Debian Bug report logs

$ sudo vim /etc/php5/mods-available/uprofiler.ini

I edited the ini file, changing extension=profiler.so to extension=uprofiler.so .... the result, happily:

$ phpunit --version
PHPUnit 5.7.17 by Sebastian Bergmann and contributors.

i.e. no more warning.

Autolithography answered 2/4, 2017 at 12:45 Comment(0)

(For Ubuntu users)

I had the same problem, but none of the answers above solved that. Here is how I solved the problem.

Open your php.ini file (mine was in /etc/php/7.3/cli/php.ini).

You may have something like this:

extension=pdo_mysql

Or maybe:

extension=/here/is/the/path/to/your/file/pdo_mysql.so

Add the following line before extension=pdo_mysql

extension=pdo

So, you will have:

extension=pdo
extension=pdo_mysql

It seems that the problem is (at least in my case) that we need to load pdo extension first to load the pdo_mysql extension.

Hope that helps!

Codfish answered 24/8, 2019 at 11:55 Comment(0)

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