PHP - installing Composer - could not open the stream: php_network_getaddresses: getaddrinfo failed: such a host is not known

Question

I am trying to use Composer Dependency Manager for PHP, but I am experiencing the following problem when I use Composer-Setup.exe (Win32 Installer).

Download failed: php_network_getaddresses: getaddrinfo failed: No such host is known. failed to open stream: php_network_getaddresses: getaddrinfo failed: No such host is known. Download failed: php_network_getaddresses: getaddrinfo failed: No such host is known. failed to open stream: php_network_getaddresses: getaddrinfo failed: No such host is known. Download failed: php_network_getaddresses: getaddrinfo failed: No such host is known. failed to open stream: php_network_getaddresses: getaddrinfo failed: No such host is known. The download failed repeatedly, aborting.` 

I followed up on several other stackoverflow threads for this error, and I checked out some other forums. In my php.ini, I made sure that I have the following options:

 allow_url_fopen = On allow_url_include = On extension=php_openssl.dll 

I also tried manual installation of Composer, which asks you to run:

 php -r "eval('?>'.file_get_contents('https://getcomposer.org/installer'));" 

I get the same error from this. However, if I remove "/ installer", it can extract the source. I checked that the url "/ installer" is working. What configuration can cause this behavior? I am running PHP 5.4 on 32-bit Windows 7.

Thanks Andrew

Answer 1

This problem was actually proxy variables. While the console was collecting changes, PHP required a system reboot to pick it up. Thus, to disable environment variables and restart, the Composer installer was able to restore the required files. Thanks to Seldaek for recommending checking proxies.

Answer 2

Solution 1

• Make sure you have ping connectivity at www.google.com.

Decision 2

 - Remove Proxy settings ,they could be ones causing it,if outside a corporate network 

Decision 3

• Add a corporate proxy setting if on a corporate network

  • set http_proxy = http: // your_proxy: your_port
  • set http_proxy = http: // username: password@your _proxy: your_port
  • set https_proxy = https: // your_proxy: your_port
  • set https_proxy = https: // username: password@your _proxy: your_port

Answer 3

 mysqli_connect('root','', 'localhost', 'people'); 

You pass the root as the host name.

try it

 mysqli_connect('localhost','root', '', 'people'); 

this will connect to localhost with the root username passwoord "" and people with the default database.

it might be better to change localhost with 127.0.0.1