PHP Warning: PHP Startup: Unable to load dynamic library

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I run a PHP script and get this error:

PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20090626/ixed.5.2.lin' - /usr/local/lib/php/extensions/no-debug-non-zts-20090626/ixed.5.2.lin: cannot open shared object file: No such file or directory in Unknown on line 0

What does that mean?

Baiel answered 12/3, 2011 at 11:41 Comment(0)

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It means there is an extension=... or zend_extension=... line in one of your php configuration files (php.ini, or another close to it) that is trying to load that extension : ixed.5.2.lin

Unfortunately that file or path doesn't exist or the permissions are incorrect.

Try to search in the .ini files that are loaded by PHP (phpinfo() can indicate which ones are) - one of them should try to load that extension.
Either correct the path to the file or comment out the corresponding line.

Cribbs answered 12/3, 2011 at 11:45 Comment(7)

So I'm getting this error too, but my site still works - thats the strangest part. For this type of error, I'd assume that php would crash right from the start. Instead I get my page, but my logger is logging this error. Weird huh? – Marconigraph 10/6, 2011 at 5:52

In the php.ini (/etc/php.ini in my case) I commented out the line extension=php_pdo_mysql.dll and restarted Apache which solved my problem and got rid of the warnings. (Mac, Maverick) – Hamza 10/1, 2014 at 12:5

Either correct the path what path are we talking about ? – Sydelle 30/11, 2016 at 2:48

3. or install the missing expected extension – Vaccinate 3/5, 2017 at 12:58

@Sydelle in the ini file: extension= [path here] – Vaccinate 27/2, 2018 at 18:14

Guys Just find out which version of PHP you are using and then go under "/etc/php/7.1/apache2/php.ini" and comment that extension. in my case it was php_gd2.dll – Brentbrenton 13/8, 2019 at 19:22

@BT It still works because this is a Warning, not an error or fatal, and will only trigger when attempting to call those libraries in code. – Petaliferous 13/4, 2021 at 14:6

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If you're on Linux, you can find all loaded configuration files by typing this in shell:

php -r "print phpinfo();" | grep ".ini"

UPDATE: As mentioned in comments, this can be even more accurate:

php -i | grep ini

Gid answered 6/3, 2014 at 22:7 Comment(2)

what about php --ini to list all ini files – Anglophobe 24/8, 2016 at 11:34

Just keep in mind that the php command line can use different phi.ini files from php web modules. This should get you closer at least though. – Rave 19/5, 2022 at 19:5

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phpStom with XAMPP

TL;DR Except from verifying that the files exist, you might need to add the drive letter to some records in your php.ini file

I suddenly started having a problem using phpStorm 7 for debugging php with xampp and xdebug. When trying to set intellij interperter to be xampps php I got a lot of the warnings like the one in the question, for example:

Unable to load dynamic library '/xampp/php/ext/php_bz2.dll'

For some reason I had to add my drive letter to the records of extension_dir and browscap in the php.ini file:

extension_dir = "\xampp\php\ext"
browscap = "\xampp\php\extras\browscap.ini"

to

extension_dir = "e:\xampp\php\ext"
browscap = "e:\xampp\php\extras\browscap.ini"

Expediential answered 25/9, 2015 at 18:47 Comment(3)

This fixed it for me on Windows 10. – Eringo 20/10, 2017 at 20:42

This fixed it for me on windows 7. Thanks a lot – Subtractive 28/2, 2019 at 9:53

Using extension_dir = "ext" works when you run from cmd, but when you run from Apache you probably need an absolute path (with drive letter etc). – Systematics 2/12, 2020 at 14:46

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If you just want to make the error disappear, and you don't need the extension, then by all means comment the line out in php.ini. But if you actually want to fix the problem here is some additional info.

There are various causes for this based on the exact module, but there are also some general guidelines.

Open phpinfo() and look for extension_dir under the Core section. This is where your modules should be located.

For instance, /usr/lib/php/modules for Unix/Linux.

If the file does in fact exist, make sure permissions are adequate.
If the file does not exist, use the resources below to install it.

Installation on *nix (PEAR)
Installation of extensions on Windows

Collum answered 21/5, 2015 at 10:55 Comment(4)

I'm trying to install through this pear module but when I run perl install <module> I got Can't open perl script "install": File or Directory not found – Mexican 3/12, 2016 at 14:28

It's difficult to know the problem, check your paths and permissions. – Collum 4/12, 2016 at 22:36

if in a container try docker-php-ext-install <package> – Unconventional 13/4, 2020 at 8:55

That helped me to lookup this in php.ini and then see that the folder was empty. – Buttonwood 26/9, 2020 at 11:33

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Loading .dll in Linux

I've encountered this warning message while I was trying to install a php-extension via the php.ini file;

until I figured out that you cannot load .dll extensions in Linux,

but you have to comment the extensions that you want to import ;extension= ... .dll and install it correctly via sudo apt-get install php-...

note: ... is the extension name you want to enable.

Florentinaflorentine answered 16/10, 2018 at 7:8 Comment(1)

Exactly, for me it was simply missing module installation - I was installing phpPgAdmin and what I needed to install explicitly was sudo apt install php-pgsql and php-version-specific sudo apt install php7.1-pgsql (change 7.1 to your php version) – Amateurism 28/8, 2019 at 16:42

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php -r "echo php_ini_loaded_file();"

Will show in CLI current ini loaded file, search there for Your extension, path to it is incorrect.

Hebe answered 18/7, 2017 at 11:9 Comment(0)

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In my case, this message started to appear when I updated the php version to 7.4.

To solve it I had to look for the php.ini files found inside the php version folder (/etc/php/7.4/apache2/ && /etc/php/7.4/cli/) checking the lines where the extensions I could see that the extensions gd2 and intl were uncommented.

Nereus answered 21/9, 2020 at 14:7 Comment(0)

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I had this error on a number of modules when I had been running different versions of PHP side by side on my server. To sort this out, I needed to install the packages it couldn't find for that specific PHP version. So, for example, if I saw:-

PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/20160303/xml.so'

I would install the library for the PHP version specifically:-

sudo apt-get install php7.1-xml

And then restart Apache. Fixed it for me. You can check your version like this:-

php -v

Blubbery answered 17/10, 2018 at 8:12 Comment(0)

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Note that you can also get this error if your PHP library doesn't have the "other" directory opening permission. In my particular case, I noticed this when using php -l to syntax check a script in my text editor. This meant that since my account was called "volomike", that account didn't have permission to run the libraries that the php command relied upon.

For instance, on Ubuntu 14.04, I had PHP5 installed automatically into the path /usr/lib/php5/20121212+lfs. However, because I was working in C++ in building some shared objects, I messed around with the directory permissions and screwed things up such that non-root accounts did not have the directory execute (directory open) permissions to view /usr/lib/php5/20121212+lfs. So, I typed the following command to rectify that problem:

sudo chmod o+x /usr/lib/php5/20121212+lfs.

Now when I do php -l example.php as a non-root user, it never gives me this "Unabled to load dynamic library" problem anymore.

Pressroom answered 26/4, 2016 at 4:56 Comment(2)

This was the exact solution for me, using Ubuntu 16.10. Make sure that you change the extension "extension" to .so when using Linux (standard config was giving me .dll) – Thurifer 18/10, 2016 at 9:41

I'm using linux mint 18 and this is still valid – Adkinson 13/2, 2017 at 16:17

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I had the same problem on XAMPP for Windows when I try to install composer. I did php -v and php throwing error :

Unable to load dynamic library '/xampp/php/ext/php_bz2.dll'

It took me a while until I realized that I need to setup my XAMPP. So I run setup_xampp.bat and php return to works like a charm.

Haggis answered 23/2, 2016 at 1:11 Comment(0)

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I had the same problem on XAMPP for Windows10 when I try to install composer.

Unable to load dynamic library '/xampp/php/ext/php_bz2.dll'

Then follow this steps

just open your current_xampp_containing_drive:\xampp(default_xampp_folder)\php\php.ini in texteditor (like notepad++)
now just find - is the current_xampp_containing_drive:\xampp exist?
if not then find the "extension_dir" and get the drive name(c,d or your desired drive) like.

extension_dir="F:\xampp731\php\ext" (here finded_drive_name_from_the_file is F)

again replace with finded_drive_name_from_the_file:\xampp with current_xampp_containing_drive:\xampp and save.
now again start the composer installation progress, i think your problem will be solved.

Ovary answered 31/1, 2020 at 10:21 Comment(0)

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What I did was;

1 - I first find out what version of PHP I am using thru the function phpinfo()

<?php   
    phpinfo();
?>

2 - From there you will find the location of your configuration(php.ini) file

3 - Open that file

4 - Comment out the line similar to the image below

This might be a different value but it should be related to extension. I am no expert but this process helped me solved similar problem.

Tincal answered 24/3, 2020 at 4:37 Comment(0)

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In my case I got this error because I downloaded a thread-safe version of the dll (infixed with -ts-), but my installation of php was a non-thread-safe (infixed with -nts-). Downloading the right version of the dll, exactly matching my php installation version fixed the issue.

Threlkeld answered 10/5, 2020 at 15:18 Comment(1)

To check on server thread-safe config see phpinfo() and thread-safety enabled/disabled. Had same error in reverse, downloaded nts when configured for ts. – Tisatisane 22/7, 2020 at 20:23

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After Windows 10 XAMPP now I installed LAMPP (XAMPP) on Ubuntu. Windows XAMPP had a lot less to configure compare to MAC (iOS) but now with Linux Ubuntu I had a few more since there are more going in Linux (a good thing).

I confused and activated mysqli.dll (and mysql.dll: erase "#" in /etc/php/7.2/cli/php.ini

I started to get the PHP Warning: PHP Startup: Unable to load dynamic library message related to dll. I commented out mysql(and i).dll in the same file but the message didn't go away up until I commented out " " in /opt/lampp/etc/php.ini.

Looks like XAMPP reads php.ini file from /etc/php/7.2/cli and makes modification in php.ini of /opt/lampp/etc. (;extension=php_pdo_mysql.dll after ";" restarted Apache and no more any message.

Canal answered 3/12, 2018 at 12:4 Comment(0)

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Uncomment extension_dir = "ext" in php.ini worked for me. I am using Windows

Erethism answered 4/12, 2023 at 15:55 Comment(0)

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'C:/PHP/5.2.13/ext\php_mcrypt1.dll'

I'd say there's some typo on your php.ini (the extra 1). Perhaps you're loading a different php.ini from what you expect (see the output of php.ini to make sure).

Other than that make sure that php_mcrypt.dll and PHP:

Were linked to the same VC runtime library (typically msvcrt.dll for VC6 or msvcrt90.dll for VC9) – use e.g. the dependency walker for this Are both debug builds or both release builds Both have ZTS enabled or ZTS disabled For libraries that depend on further libraries (DLLs), make sure they are available (e.g. in the same directory as the extension) PHP should give you meaning errors if any of the first three conditions above is not satisfied, but I wrote those anyway because I'm not sure for PHP 5.2.

Snapback answered 31/3, 2020 at 6:29 Comment(0)

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From C:\xampp\php\php.exe I got

Unable to load dynamic library ''
C:\xampp\php\ext\php_.dll (The specified module could not be found.)

I solved by commenting out
C:\xampp\php\php.ini
;extension=

Wanwand answered 16/10, 2020 at 7:8 Comment(0)

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I had the same problem when I tried to use php with sql server, when I added the sqlsrv libraries ... it gave me the error, after several days of researching there, I understood that microsoft does not support x64 in this case so what I did was install laragon x86 and use the corresponding libraries. I hope it helps with something

Mismanage answered 28/12, 2021 at 18:37 Comment(0)

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Go to system env variable and set the php ext dir path as

C:\xampp\php\ext

basically it's finding the ext directory and then locating it's file but it's unable to find the files becuase php path is set as different.

Ithunn answered 15/3, 2022 at 7:55 Comment(0)

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Look at the architecture (arm64, amd64, ...) !

I ran into this problem with pdflib for php in lando (docker DEBIAN 11) on macOS.

The problem was that my copy of php_pdflib.so was packaged for linux/amd64 but in docker I was running Debain arm64 version.

So thew solution is to use the right package for the right architecture :)

On Debian(-based) linux you can find out your architect with

dpkg --print-architecture

Also you can analyze your shared object (.so-file) with:

ldd

Lobito answered 20/8, 2023 at 13:36 Comment(0)

Loading .dll in Linux

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