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++){
    $source_url =$cars[$i];
    $rest_url = "http://api.facebook.com/restserver.php?method=links.getStats&urls=".urlencode($source_url);
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_URL,$rest_url);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    $content = curl_exec($curl);
    curl_close($curl);
    $message=stripslashes($content);
    $xml_record = simplexml_load_string($message);
    $fb_like_count = $xml_record->link_stat->like_count;
    echo "".$fb_like_count;
    mail("abc@gmail.com","hi".$fb_like_count,$message);
}

But I am geting undefined call function error.

Do you have `php-xml` module installed and enabled? – marian0 Jul 03 '15 at 11:57 — marian0, Jul 03 '15 at 11:57

score 160 · Answer 1 · edited Nov 18 '19 at 21:31

160

For PHP 7 and Ubuntu 14.04 the procedure is follows. Since PHP 7 is not in the official Ubuntu PPAs you likely installed it through Ondřej Surý's PPA (sudo add-apt-repository ppa:ondrej/php). Go to /etc/php/7.0/fpm and edit php.ini, uncomment to following line:

extension=php_xmlrpc.dll

Then simply install php7.0-xml:

sudo apt-get install php7.0-xml

And restart PHP:

sudo service php7.0-fpm restart

And restart Apache:

sudo service apache2 restart

If you are on a later Ubuntu version where PHP 7 is included, the procedure is most likely the same as well (except adding any 3rd party repository).

edited Nov 18 '19 at 21:31

JohnnyB1988

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answered Apr 04 '16 at 15:40

Andreas Bergström

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Just fyi you don't need to uncomment extension=php_xmlrpc.dll on Ubuntu as that is a windows extension just do the second step and it will work – wmfrancia Oct 11 '16 at 16:42
i followed the same : still i get Call to undefined function simplexml_load_string() in /var/www/html/magento1901/lib/Varien/Simplexml/Config.php on line 510 – Sushivam Oct 26 '16 at 06:16
1

I had received a unrecognized service error. I just restarted apache2 and this fixed this issue. Thaks for the help find this line in PHP.ini – Coded Container Oct 28 '16 at 17:28
yep, this worked, and I was able to skip the first step as @wmfrancia stated. – Linnea Huxford Dec 24 '16 at 20:02
I tried the same but didn't work for me. From error log Uncaught Error: Call to undefined function simplexml_load_string() in /var/www/html/lib/Varien/Simplexml/Config.php – Killer Mar 29 '17 at 22:46
for php5.6 I uncommented the line as in answer in /etc/php/5.6/cli/php.ini, helped me – Vitali Kuzmin Jun 27 '17 at 19:22
saved my day on Raspberry with ubuntu mate – Dmitry Yudin Oct 14 '17 at 15:54
I just did "sudo apt install php-xml", no need for other steps – naomi Oct 25 '18 at 11:34

Fabian Blechschmidt · Answer 2 · 2020-05-12T15:17:01.760

54

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

edited May 12 '20 at 15:17

answered Mar 05 '16 at 22:39

Fabian Blechschmidt

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You can just do "sudo apt install php-xml" and it will get the correct version for you. – naomi Oct 25 '18 at 11:35
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And don't forget to run `sudo service apache2 restart` command after it – Zulhilmi Zainudin May 11 '20 at 08:45

score 10 · Answer 3 · answered Jan 10 '20 at 16:27

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

score 7 · Answer 4 · answered Jul 03 '15 at 12:03

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'];

i have modified my terminal php version then it is working fine — anil, Jul 08 '15 at 14:07

Björn Pfoster · Answer 5 · 2017-08-24T12:08:48.207

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)

edited Aug 24 '17 at 12:08

answered Jul 26 '17 at 11:40

Björn Pfoster

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Also try this [link](http://www.webdeveloper.com/forum/showthread.php?191658-RESOLVED-Fatal-error-Call-to-undefined-function-simplexml_load_file()&s=2a5f7a91ae737417b735ec83fbf17295&p=932942#post932942) – Björn Pfoster Jul 26 '17 at 11:43

score 2 · Answer 6 · answered Mar 28 '19 at 14:06

2

To fix this error on Centos 7:

Install PHP extension:

sudo yum install php-xml
Restart your web server. In my case it's php-fpm:

services php-fpm restart

answered Mar 28 '19 at 14:06

yesnik

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Ajay Singh · Answer 7 · 2020-05-20T14:23:38.570

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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

edited May 20 '20 at 14:23

answered May 20 '20 at 14:14

Ajay Singh

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PHP: Call to undefined function: simplexml_load_string()

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