bbPress.org

kickass! yes our server was set by default to php4. The server guys said:

We have checked our server logs. The reason for the issue is not related to the memory limits for your account.

The file_put_contents() function is only available in PHP 5.

By default our servers handle any requests to .php file through the PHP 4 interpreter. By default the PHP 5 interpreter processes only files with .php5 extension.

If you want to change this in a way that .php files are processed by the PHP 5 interpreter you should put the following line in your /www/blog/.htaccess file:

AddHandler application/x-httpd-php5 .php”