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<?php stream_context_set_default( array( 'http' => array( 'method' => 'HEAD' ) ) ); $headers = get_headers('http://www.google.com/'); var_dump($headers);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: get_headers(): php_network_getaddresses: getaddrinfo for www.google.com failed: System error in /in/92Zrv on line 10 Warning: get_headers(http://www.google.com/): Failed to open stream: php_network_getaddresses: getaddrinfo for www.google.com failed: System error in /in/92Zrv on line 10 bool(false)

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