PHP 安装 Redis 扩展：Connection to `ssl://pecl.php.net:443′ failed

#### 1. 获取证书存储地址 php -r "print_r(openssl_get_cert_locations());" 执行结果 php -r "print_r(openssl_get_cert_locations());" Array ( [default_cert_file] => /usr/local/etc/openssl/cert.pem [default_cert_file_env] => SSL_CERT_FILE [default_cert_dir] => /usr/local/etc/openssl/certs [default_cert_dir_env] => SSL_CERT_DIR [default_private_dir] => /usr/local/etc/openssl/private [default_default_cert_area] => /usr/local/etc/openssl [ini_cafile] => [ini_capath] => ) 本地证书地址为 /usr/local/etc/openssl/cert.pem。 #### 2. 下载最新的证书 wget http://curl.haxx.se/ca/cacert.pem #### 3. 更新证书 sudo mv cacert.pem /usr/local/etc/openssl/cert.pem #### 4. 再次安装 redis 扩展 sudo pecl install redis