PHP: Call to undefined function: simplexml_load_string()

Question

I am implementing facebook count function using cron file. In which cron runs every 10 minutes and counts the total likes of a page.

for($i=0;$i<3;$i++){
         


        

Answer 1

For Nginx (without apache) and PHP 7.2, installing php7.2-xml wasn't enough. Had to install php7.2-simplexml package to get it to work

So the commands for debian/ubuntu, update packages and install both packages

apt update
apt install php7.2-xml php7.2-simplexml

And restart both Nginx and php

systemctl restart nginx php7.2-fpm

Answer 2

I also faced this issue. My Operating system is Ubuntu 18.04 and my PHP version is PHP 7.2.

Here's how I solved it:

Install Simplexml on your Ubuntu Server:

sudo apt-get install php7.2-simplexml

Restart Apache Server

sudo systemctl restart apache2

That's all.

I hope this helps

Answer 3

To fix this error on Centos 7:

1. Install PHP extension:

   sudo yum install php-xml

2. Restart your web server. In my case it's php-fpm:

   services php-fpm restart

Answer 4

If the XML module is not installed, install it.

Current version 5.6 on ubuntu 14.04:

sudo apt-get install php5.6-xml

And don't forget to run sudo service apache2 restart command after it

Zulhilmi Zainudi

Answer 5

Make sure that you have php-xml module installed and enabled in php.ini.

You can also change response format to json which is easier to handle. In that case you have to only add &format=json to url query string.

$rest_url = "http://api.facebook.com/restserver.php?method=links.getStats&format=json&urls=".urlencode($source_url);

And then use json_decode() to retrieve data in your script:

$result = json_decode($content, true);
$fb_like_count = $result['like_count'];

Answer 6

I think it can be something like in this Post: Class 'SimpleXMLElement' not found on puphpet PHP 5.6 So maybe you could install/activate

php-xml or php-simplexml

Do not forget to activate the libraries in the php.ini file. (like the top comment)