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How do I enable the DOM extension in my php.ini file? I am running a Wordpress site and getting a message "Please enable the DOM extension in your PHP configuration".

Do I need to edit the wp-config file or php.ini

Steve Bell
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2 Answers2

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You need to install php-xml

sudo apt-get install php-xml

or specific version of the extension

sudo apt-get install php7.1-xml

and then according to docs in php.net you have to add

extension=dom.so

into the php.ini file.

Please note that this extension should be enabled by default. If it's not enabled look for --disable-dom option.

Davit Tovmasyan
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    for me I had to `sudo apt-get install php7.1-xml` on ubuntu 16. – Ibrahim.H Nov 08 '19 at 21:54
  • on my CentOS server... i had to add the extension directive as you showed! thank you! but i also had to copy `/opt/remi/php74/root/usr/lib64/php/modules/dom.so` to `/usr/lib64/php/modules/`... the combo is what made it work for me... also... i had to repeat for `simplexml.so` and `xmlwriter.so` to get Authorize.net to work with woocommerce – aequalsb Mar 03 '22 at 16:49
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    adding to @Ibrahim.H 's comment, you obviously have to look for your php version's extentions, f.e. php8.2-xml ... i think the default php version in the packets points at 7.4.33 - and i'm hoping it changes even that soon. – clockw0rk Jan 23 '23 at 12:55
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You need to install php-xml. 

sudo apt-get install php-xml

Restart your server (here apache).

sudo service apache2 restart

And you can check that everything is OK using : 

php -m

Resulting : 

[PHP Modules]
...
dom < and other relatives modules as xml, xmlreader, SimpleXML...
...

[Zend Modules]
Zend OPcache
Paul Leclerc
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