It’s definitif your PHP server version which is not up-to-date.
We had many requests from hosted websites by GoDaddy. Do you host your website there?
In any cases pleas check your PHP server version, maybe also at the admin panel or contact your hosting service.
Or use a phpinfo()-page (phpinfo.php at your server file system), write this code lines into the files and call it with your web-browser:
<?php
// Show all information, defaults to INFO_ALL
phpinfo();
?>
The blog is hosted in a company called Locaweb, I can not update php or modify files. 🙁
It’s a managed WordPress installation you use?
I recommend to cantact you Locaweb, e.g. via contact formular or via email and write you need a newer PHP version not a 5 years old one
Yes. I’ll get in touch with them and see, but company, until I know the answer: we do not support third-party plugins. 🙁
But, thank you anyway. 😉
Here are some interesting words from the WordPress creator Matt Mullenweg (the third last question):
…
What role do hosting companies play in the WordPress ecosystem?
MM: Hosting companies are crucial. The number one thing that they can do is help ensure that people are on the latest versions of PHP and MySQL, which will make things faster and more secure, and help ensure that people are on the latest versions of WordPress, which of course helps everyone.
…
Quote source: Interview with WordPress Creator Matt Mullenweg
