gavin@webdev:~> curl -sS https://getcomposer.org/installer | php Downloading... Download failed: file_get_contents(): SSL operation failed with code 1. OpenSSL Error messages: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed file_get_contents(): Failed to enable crypto file_get_contents(https://getcomposer.org/composer.phar): failed to open stream: operation failed Downloading... Download failed: file_get_contents(): SSL operation failed with code 1. OpenSSL Error messages: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed file_get_contents(): Failed to enable crypto file_get_contents(https://getcomposer.org/composer.phar): failed to open stream: operation failed Downloading... Download failed: file_get_contents(): SSL operation failed with code 1. OpenSSL Error messages: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed file_get_contents(): Failed to enable crypto file_get_contents(https://getcomposer.org/composer.phar): failed to open stream: operation failed The download failed repeatedly, aborting.
解决：
wget http://curl.haxx.se/ca/cacert.pem curl -sS https://getcomposer.org/installer | php -- --cafile=cacert.pem