I have a PHP file about MQTT publish. When I run this PHP file in the terminal it run properly and no error everything was fine, But when I open it via a browser I get an error like this:
Warning: stream_socket_client(): unable to connect to tcp://xxx.xxx.xxx.xxx:1883 (Permission denied) in /var/www/mydomain/html/PLC-controller/phpMQTT.php on line 148
This textbox defaults to using Markdown to format your answer.
You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!
These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.
Become a contributor for community
Get paid to write technical tutorials and select a tech-focused charity to receive a matching donation.
DigitalOcean Documentation
Full documentation for every DigitalOcean product.
Resources for startups and SMBs
The Wave has everything you need to know about building a business, from raising funding to marketing your product.
The developer cloud
Scale up as you grow — whether you're running one virtual machine or ten thousand.
Get started for free
Sign up and get $200 in credit for your first 60 days with DigitalOcean.*
*This promotional offer applies to new accounts only.
Hello @wattanaipongtham ,
Check your php.ini settings for the parameter safe_mode. It should be Off. Also try to disable suhosin if it’s running.
If it’s not solved, tell me if you are using Apache or Nginx?
Regards, Sergio Turpín